Unitron 12100 Series User manual

12100 Polarizing
MICROSCOPE SERIES
MANUAL
100 Lauman Lane, Suite A, Hicksville, NY 11801
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12100 POLARIZING MICROSCOPE SERIES
UNITRON® 2
CONTENTS
SAFETY NOTES ..................................................................................................................3
CARE AND MAINTENANCE................................................................................................3
INTRODUCTION..................................................................................................................4
UNPACKING THE COMPONENTS...................................................................................4-5
COMPONENT DIAGRAMS...............................................................................................6-8
ASSEMBLY
MOUNTING THE VIEWING HEAD.................................................................................9
MOUNTING THE CONDENSER.....................................................................................9
EYEPIECE INSTALLATION............................................................................................9
COMPONENT SPECIFICATIONS.................................................................................10-12
ADJUSTMENT AND OPERATION
ADJUSTING INTERPUPILLARY DISTANCE................................................................13
FOCUSING ...................................................................................................................13
ADJUSTING FOCUSING TENSION.............................................................................14
ADJUSTING THE CONDENSER APERTURE DIAPHRAGM.......................................14
CENTRATION...............................................................................................................15
REPLACING THE FUSE...............................................................................................16
SPECIFICATIONS..............................................................................................................16
TROUBLESHOOTING........................................................................................................19
MAINTENANCE..................................................................................................................20
SERVICE............................................................................................................................20
WARRANTY.......................................................................................................................20

12100 POLARIZING MICROSCOPE SERIES
UNITRON® 3
SAFETY NOTES
1. Open the shipping carton carefully to prevent any accessory, i.e. objectives or eyepieces, from
dropping and being damaged.
2. Keep the instrument out of direct sunlight, high temperature or humidity, and dusty environments.
Ensure the microscope is located on a smooth, level and firm surface.
3. If any specimen solutions or other liquids splash onto the stage, objective or any other component,
disconnect the power cord immediately and wipe up the spillage. Otherwise, the instrument may be
damaged.
4. All electrical connectors (power cord) should be inserted into an electrical surge protector to prevent
damage due to voltage fluctuations.
5. LED LAMP & FUSE REPLACEMENT -- CAUTION: the glass housing of the lamp may
be hot. DO NOT attempt to change the lamp before it is completely cooled For safety
when replacing the LED bulb or fuse (ONLY replace with the same size, type and rating of
original LED bulb or fuse), be sure the main switch is in the off position, disconnect the
power cord from outlet, and replace the LED bulb or fuse. Reconnect the power cord and
turn unit on.
6. Confirm that the input voltage indicated on your microscope corresponds to your line voltage. The
use of a different input voltage other than indicated will cause severe damage to the microscope.
NOTE: Always plug the microscope power cord into a suitable grounded electrical outlet.
A grounded 3-wire cord is provided.
CARE AND MAINTENANCE
1. Do not attempt to disassemble any component including eyepieces, objectives or the focusing
assembly.
2. Keep the instrument clean; remove dirt and debris regularly. Accumulated dirt on metal surfaces
should be cleaned with a damp cloth. More persistent dirt should be removed using a mild soap
solution. Do not use organic solvents for cleaning.
3. The outer surface of the optics should be inspected and cleaned periodically using an air bulb. If dirt
remains on the optical surface, use a soft, lint free cloth or cotton swab dampened with a lens
cleaning solution (available at camera stores). All optical lenses should be swabbed using a circular
motion. A small amount of absorbent cotton wound on the end of a tapered stick such as cotton
swabs or Q-tips, makes a useful tool for cleaning recessed optical surfaces. Avoid using an
excessive amount of solvents as this may cause problems with optical coatings or cemented optics
or the flowing solvent may pick up grease making cleaning more difficult. Oil immersion objectives
should be cleaned immediately after use by removing the oil with lens tissue or a clean, soft cloth.
4. Store the instrument in a cool, dry environment. Cover the microscope with the dust cover when not
in use.
5. UNITRON®microscopes are precision instruments which require periodic servicing to maintain
proper performance and to compensate for normal wear. A regular schedule of preventative
maintenance by qualified service personnel is highly recommended. Your authorized UNITRON®
distributor can arrange for this service.

12100 POLARIZING MICROSCOPE SERIES
UNITRON® 4
INTRODUCTION
Congratulations on the purchase of your new UNITRON®microscope. UNITRON®microscopes are
engineered and manufactured to the highest quality standards. Your microscope will last a lifetime if
used and maintained properly. UNITRON®microscopes are carefully assembled, inspected and tested
by our staff of trained technicians in our New York facility. Careful quality control procedures ensure each
microscope is of the highest quality prior to shipment.
UNPACKING THE COMPONENTS
Your microscope arrived packed in a molded shipping carton. Do not discard the carton: the shipping
carton should be retained for reshipment of your microscope if needed. Avoid placing the microscope in
dusty surroundings or in high temperature or humid areas as mold and mildew can form.
The components of the 12100 Polarizing Microscope are shipped “double-boxed” -- inside the inner
cartons the microscope and its components are further protected by foam forms.
IMPORTANT: When lifting and moving the microscope, hold it by one of the microscope frame’s curved
vertical arms with one hand and place your other hand under the base of the frame. NEVER hold
the stage, focus knobs or eyepiece tubes when lifting or moving the microscope.
Curved Arms
Frame Base

12100 POLARIZING MICROSCOPE SERIES
UNITRON® 5
UNPACKING THE COMPONENTS (continued)
IMPORTANT
A shipping clamp secures the microscope’s focusing mechanism during transportation.
Once the microscope mainframe has been removed from the shipping carton and foam support,
the clamp must be removed before proceeding further.
The clamp is accessible by removing the Illuminator Housing at the base of the mainframe.
To remove the clamp:
Grip the finger grooves on the sides of the housing
and slide the housing off the microscope frame.
Use the hex key tool provided to remove the three
screws securing the gold-toned clamp.
NOTE: Retain this clamp and screws for reuse in
the event the microscope is reshipped.
Replace the Illuminator Housing, making certain it
is pushed fully back onto the microscope frame.
Shipping
Clamp
Illuminator
Housing

12100 POLARIZING MICROSCOPE SERIES
UNITRON® 6
COMPONENTS DIAGRAM 1
Binocular Head
Objective
Nosepiece
Rotating Stage
On/Off
Switch
Lamp
Intensity
Control Knob
Microscope
Frame
Fine Focusing
Knob
Nosepiece
Standard
Eyepiece
Reticle
Eyepiece
Bertrand Lens Turret
Bertrand Lens
Centering Screw
Analyzer
Condenser
Illuminator
Housing

12100 POLARIZING MICROSCOPE SERIES
UNITRON® 7
COMPONENTS DIAGRAM 2
Fine Focusing
Knob
Tension
Adjustment
Collar
Coarse Focusing
Knob
Condenser
Adjustment
Knob
Condenser
Centering Screws
Analyzer Rotator
Wheel
Analyzer Rotator
Lock Screw
Intermediate Tube
Lock Screw
Intermediate Tube
Objective Centering
Screw
Stage Vernier
With Lock Screw
Condenser
Swing-out Top Lens
Condenser

12100 POLARIZING MICROSCOPE SERIES
UNITRON® 8
COMPONENTS DIAGRAM 3
ASSEMBLY
Mounting The Viewing Head
Bertrand/Analyzer assembly is preinstalled onto
the microscope frame. The viewing head is
mounted to the Bertrand/Analyzer assembly. Note
that the viewing head has a registration pin on its
mounting flange. This pin must engage the
corresponding slot on the top flange of the
Bertrand/Analyzer assembly.
Secure the viewing head by tightening the hex type
set screw on the right side of the Bertrand/Analyzer
assembly.
Mounting The Condenser
The condenser incorporates a registration pin on
its mounting flange. This pin engages a
corresponding groove in the condenser mounting
bracket.
Bertrand Lens
Turret
Bertrand Lens
Centering Screw
Analyzer
Compensator
Bertrand Lens
Focusing Wheel

12100 POLARIZING MICROSCOPE SERIES
UNITRON® 9
ASSEMBLY(continued)
Eyepiece Installation
(Refer to photos on left)
LEFT: Turn the top of the Standard eyepiece (no
reticle) clockwise until it stops and is in its lowest
position.
Insert the eyepiece into the left eyepiece tube by
aligning the notches on the eyepiece slightly to the
left of the tabs on the eyepiece tube; rotate the
eyepiece clockwise until the tabs engage the
notches (it will stop rotating when engaged).
RIGHT: Turn the top of the Measuring eyepiece
(with reticle) clockwise until it stops and is in its
lowest position.
Before inserting the eyepiece, look through the
eyepiece to determine the correct orientation of the
scale (i.e., it should be horizontal and readable).
Insert the eyepiece into the right eyepiece tube by
aligning the notches on the eyepiece slightly to the
left of the tabs on the eyepiece tube; rotate the
eyepiece clockwise until the tabs engage the
notches (it will stop rotating when engaged).
NOTE: Only one orientation on the right
Measuring eyepiece is correct: the one in which
the numbered scale is horizontal when you look
through the eyepiece.

12100 POLARIZING MICROSCOPE SERIES
UNITRON® 10
COMPONENT SPECIFICATIONS
Optical system: Infinity tube length design
Objectives: Stress-free, infinity corrected, Plan Achromats
Objective
Magnification
NA
Cover glass
thickness(mm)
Working
Distance (mm)
Color Band
4X
0.10
-
25
red
10X
0.25
0.17
6.7
yellow
20X
0.40
0.17
6.4
green
40X
0.65
0.17
0.17
light blue
60x (optional)
0.8
0.17
0.3
light blue
Component
Description
Viewing Head
Seidentopf binocular, or Trinocular depending on model ordered.
Eyepieces
WF10x/20mm field of view with -5 to + 5 diopter adjustment
Two eyepieces are supplied:
10x Standard eyepiece (no reticle)
10x Measuring eyepiece with 0.1mm/division horizontal scale and vertical
crosshair
Also supplied:
Plain 20mm field-stop eyepiece insert
Optional:
10x eyepiece with crosshair reticle
Nosepiece
RMS Thread
4-position, one fixed and three individually centerable

12100 POLARIZING MICROSCOPE SERIES
UNITRON® 11
COMPONENT SPECIFICATIONS(continued)
Component
Description
Intermediate Tube features
The Intermediate Tube is pre-installed on the mainframe
It incorporates several advanced features:
1. A Bertrand Lens that is both focusable and centerable. It can be switched
in or out of the optic path. The Bertrand lens permits observation of the back
focal plane of the objectives for polarized light conoscopic observation. The
centerablity feature allows it to be precisely aligned over back focal plane of
the objective in use.
2. A Two-position Analyzer Slider (P2) that can be moved in or out of the
optic path. When pulled out, the Rotatable Analyzer (P2) is in optic path.
Push the slider in to move it out of the optic path. The rotatable Analyzer
control ring is calibrated 0 –360 degrees. Its built-in vernier scale allows
discrimination to 0.1 degree and is lockable at any setting.
3. An Accessory Slot accepts standard DIN test and compensators plates
DIN accessory Sliders
Two sliders are supplied as standard equipment.
1. A three-position Test Plate.
The center position is an open aperture. When pushed fully in, a λ first-order
red tint plate is placed in the optic path. Pulling the slider fully out introduces a
1/4λ retarder. This plate is used to amplify very weak birefringence and the
determination of x’ and y’ of the specimen.
2. The Quartz Wedge Compensation Plate is installed in the DIN accessory
slot to enable an approximation of the retardation in the range of 1 -6
Lambda.
Rotatable stage：The stage diameter is 160mm. It incorporates a 360 degree
scale and increments of 0.1 degree can be determined by means of the built-
in vernier scale. The stage’s center of rotation is centerable on the optics axis.
This feature assures the feature of the specimen in the center of the field of
view remains there as stage is rotated. The stage is lockable at any
orientation.
Focusing System
The knob on the right side of the microscope controls the Fine focus. On the
left side is a Coaxial Coarse/Fine knob. The Fine Focus on the left side has
graduations of 0.002mm.
Maximum focusing travel: 24mm
Mechanical Stage (optional)
This mechanism facilitates holding and moving the specimen being observed.
A spring-loaded arm secures the specimen slide and two control knobs
facilitate x-y translation. The movement range is 30X40mm
Stage spring clips
Two finger-type spring clips are supplied to assist in securing specimens on
the stage. These clips provide an alternative method of securing the
specimen slide on the stage.

12100 POLARIZING MICROSCOPE SERIES
UNITRON® 12
COMPONENT SPECIFICATIONS(continued)
Component
Description
Swing-out Condenser
A lever on the right side of the condenser moves the top lens of the
condenser in or out of the optic path. When the top lens is in the path the NA
is 0.9; when it is swung out, the NA is 0.3.
Polarizer (P1)
The Polarizer is located below the condenser lens. It is permanently attached
to the bottom of the condenser carrier bracket. It has a 360 scale. When set
to 0 (zero) degrees the orientation of polarization is East-to-West. There are
detents at 0, 90, 180 and 270 degrees. A lock screw permits it to be secured
in any orientation
Illuminator Housing
The slide-out illuminator housing is easily removable for access to the LED
bulb and the shipping clamp (installed prior to shipping the microscope to
protect the focus mechanism)
Illumination
Transmitted light observation
Continuously variable intensity 5 watt LED lamp
Frame
Rigid cast aluminum
Fuse
1.0 Amp (T1 AL 250) –CAT# 149-30-37
Filter
45mm Clear Blue
Power Cord
110V with integral ground wire; 220V version optional

12100 POLARIZING MICROSCOPE SERIES
UNITRON® 13
ADJUSTMENT & OPERATION
Plug the 3-prong line cord into the microscope and then into a grounded 120V or 220V A.C. electrical
outlet. Usage of a surge suppressor outlet is highly recommended. Turn the illuminator switch to “_.”
For longer bulb life always turn the illuminator variable intensity knob to the lowest illumination intensity
setting possible before turning the power on or off.
Adjusting Interpupillary Distance
To adjust the interpupillary distance, hold the left and
right eyetubes while observing a specimen. Rotate
the eyetubes around the central axis until the fields of
view of both eyetubes coincide completely. A
complete circle should be seen in the viewing field when
viewing the specimen slide.
An improper adjustment will cause operator fatigue and
will disrupt the objective parfocality.
Focusing
To ensure that you obtain sharp images with both eyes
(since eyes vary, especially for those wearing glasses)
any eyesight variation can be corrected in the following
manner:
Select the 10x objective
Place a specimen on the stage and secure it with
the stage clips
Set both eyepiece diopter collars to “0”.
The right eyepiece contains the measuring reticle.
Using your right eye only, rotate the eyepiece’s
diopter collar until the reticle is in sharp focus
Focus your specimen by adjusting the coarse
adjustment knob. When the image is in view,
refine the image to its sharpest focus by turning
the fine adjustment knob.
Now look through the left eyepiece. Do not adjust
the microscope’s focusing knobs. Rotate the left
eyepiece diopter collar to obtain the sharpest
focus of the specimen.
CAUTION: DO NOT turn the focusing knobs in opposite
directions –this will seriously damage the focusing
mechanism.
Eyepiece
Diopter Collar

12100 POLARIZING MICROSCOPE SERIES
UNITRON® 14
ADJUSTMENT & OPERATION(continued)
Adjusting the Focusing Tension
In the event the microscope “drifts” out of focus or seems
to require more effort to turn the focus knob than in the
past, the focus tension may require adjustment. An
adjustment collar is provided for this purpose.
NEVER turn the focusing knobs in opposite directions.
This WILL seriously damage the focusing mechanism.
The tension adjustment collar is located on the left side of
the microscope between the coarse focus knob and the
vertical arm. Gripping the knurled surface of the collar,
rotate clockwise to increase or counter-clockwise to
reduce tension according to individual preference.
Adjusting the Condenser
Aperture Diaphragm
The condenser contains an iris-type variable diaphragm,
usually referred to as the microscope’s Aperture
Diaphragm. The diameter of the aperture opening is
controlled by moving the control lever that projects from
the front of the condenser housing. The scale facilitates
the setting of the diaphragm opening.
As the aperture is closed, the contrast and range of focus
increase, however the brightness and resolution are
simultaneously decreased. The optimal setting often
depends on the characteristics of the specimen and the
viewing conditions.
For general observing, we recommend the aperture
diaphragm setting be adjusted to match the magnification
of the objective in the optical path.
Tension
Adjustment
Collar

12100 POLARIZING MICROSCOPE SERIES
UNITRON® 15
ADJUSTMENT & OPERATION(continued)
Centration
When using a polarizing light microscope it is
desirable for the object under study to remain
centered in the field of view as the stage is rotated.
The components of your microscope were
adjusted for optimal centration prior to shipment.
In the event the pre-adjustment is lost, it can be re-
established following procedure below.
This is a two part procedure involving the
STAGE and the OBJECTIVES:
STAGE
1. Place a specimen under the stage clips.
2. Remove analyzer from the optical path.
3. Focus on the specimen with 10x objective. One
eyepiece must have a crosshair reticle.
4. Select an easily recognizable feature and move
the slide so the feature is at the intersection of
the eyepiece crosshair.
5. Loosen the stage-rotation clamp thumbscrew
(knurled screw at the front of the stage).
6. Insert the two stage-centering tools.
7. Rotate the stage 180 degrees.
8. If the feature selected in Step 4. above shifts
away from the center, simultaneously turn the
two stage- centering screws so that the
eyepiece intersection point of the crosshairs
moves halfway towards the feature.
(NOTE: The reticle is not actually moving, the
motion is the object moving beneath the objective.
Thus the apparent motion of the reticle in relation
to the feature is an illusion. However, it is common
to refer to the reticle as “moving toward the
feature”).
9. It may be necessary to repeat steps 7 and 8
several times. The factory specification for
centration is approximately +/- 2 div. of the
Measuring eyepiece horizontal scale.
10. Remove the two stage-centering tools when
satisfied with the centration.
11. Tighten the stage-rotation clamp thumbscrew.
The stage now rotates on the optic axis of the
10x objective. Do not move the specimen.
OBJECTIVES
NOTE: The following procedure assumes the
stage has been centered to rotate about the
center of the 10x field of view. See previous
section on page 14 for instruction.
The design of the 12100 Polarizing Microscope
allows the remaining objectives to now be
precisely aligned with the stage’s new axis of
rotation. This advanced feature assures the
object under study remains in the center of the
field of view as different magnifications are
used.
1. Select the 20x objective.
2. Insert the two objective-centering screws
into the access openings in the nosepiece
above the objective.
3. Turn the objective-centering screws to move
the crosshair intersection to the feature
selected in step 4 of stage centration
procedure (see previous section).
4. Rotate the stage 180 degrees.
5. If the feature shifts away from the center,
simultaneously turn the two objective-
centering screws so that the eyepiece
intersection point of the crosshairs moves
halfway towards the feature.
6. It may be necessary to repeat this steps
several times. When the feature rotates in
the center of the field of view, the 20x is
properly centered.
7. Remove the two stage-centering tools and
proceed to center the remaining objectives
using the same procedure (1. –6. above).

12100 POLARIZING MICROSCOPE SERIES
UNITRON® 16
REPLACING THE FUSE
(Refer to photos on left and bottom of page)
FUSE: 1.0 Amp (T1 AL 250)
CAT#: 149-30-37
To replace the fuse, use a small flat head screwdriver
and insert it into the notch on the bottom of the plug
receptacle on the back of the microscope and pull it
toward you to slide the fuse holder out.
Press the tab on the bottom of the fuse holder to release
the fuse.
Insert a new fuse into the holder and slide the fuse holder
back into the bottom of the plug receptacle making sure it
is firmly in place.

12100 POLARIZING MICROSCOPE SERIES
UNITRON® 17
TROUBLESHOOTING
Under certain conditions, performance of this unit may be adversely affected by factors other than
defects. If a problem occurs, please review the following list and take remedial action as needed. If you
cannot solve the problem after checking the entire list, please contact your local dealer for assistance.
OPTICAL
Problem
Cause
Corrective Measure
Double images
Interpupillary distance is not correct
Readjust it
Diopter adjustment is not correct
Readjust it
Dirt appears in the view field
Dirt on the specimen
Clean specimen
Dirt on the surfaces of eyepieces
Clean eyepieces
Image is not clear
Dirt on the surface of objectives
Clean objectives
Image is not clear while focusing
change
Diopter adjustment is not correct
Readjust diopter
Focusing is not correct
Readjust it
The focusing knob does not turn
smoothly
The focusing knob is too tight
Loosen it to a suitable position
Darkness at the periphery or uneven
brightness of field of view
Revolving nosepiece not in click stop
position
Revolve the nosepiece to click
stop position by swinging the
objective correctly into the
optical path
Dirt or dust on the field of view
Dirt or dust on the lens - eyepiece,
condenser, objective, collector lens
or specimen
Clean the lens

12100 POLARIZING MICROSCOPE SERIES
UNITRON® 18
TROUBLESHOOTING (continued)
IMAGE
Problem
Cause
Corrective Measure
Poor image quality
No cover glass attached to the slide
Cover glass is too thick or thin
Slide maybe upside down
Condenser aperture is closed or
open too much
Condenser is positioned too low
Attach a 0.17mm cover glass
Use a cover glass of the
appropriate thickness (0.17mm)
Turn slide over so the cover
glass faces up
Open or close properly
Position the condenser slightly
lower than the upper limit
Image moves while focusing
Revolving nosepiece is not in the
click-stop position
Revolve the nosepiece to the
click-stop position
Image tinged yellow
Lamp intensity is too low
Blue filter not used
Adjust the light intensity by
rotating the intensity control dial
and/or iris diaphragm
Use daylight blue filter
Image is too bright
Lamp intensity is too high
Adjust the light intensity by
rotating the intensity control dial
and/or iris diaphragm
Insufficient brightness
Lamp intensity is too low
Aperture diaphragm closed too far
Condenser position too low
Adjust the light intensity by
rotating the intensity control dial
and/or iris diaphragm
Open to the proper setting
Position the condenser slightly
lower than the upper limit

12100 POLARIZING MICROSCOPE SERIES
UNITRON® 19
TROUBLESHOOTING (continued)
MECHANICAL
Problem
Cause
Corrective Measure
Image will not focus with high power
objectives
Slide upside down
Cover glass is to thick
Turn the slide over so the cover
glass faces up
Use a 0.17mm cover glass
High power objective contacts slide
when changed from low power
objective
Slide upside down
Cover glass is to thick
Diopter adjustment is not set
properly
Turn the slide over so the cover
glass faces up
Use a 0.17mm cover glass
Readjust the diopter settings as
outlined in section 4.3
Lamp does not light when switched
on
No electrical power
Lamp bulb burnt out
Fuse blown out
Check power cord connection
Replace bulb
Replace fuse
Slippage of focus when using the
coarse focusing knob
Tension adjustment is set too low
Increase the tension on the
focusing knobs
Fine focus is ineffective
Tension adjustment is set too high
Loosen the tension on the
focusing knobs

12100 POLARIZING MICROSCOPE SERIES
UNITRON® 20
MAINTENANCE
Please remember to never leave the microscope with eyepieces removed and always protect the
microscope with the dust cover when not in use.
SERVICE
UNITRON®microscopes are precision instruments which require periodic servicing to keep them
performing properly and to compensate for normal wear. A regular schedule of preventative maintenance
by qualified service personnel is highly recommended. Your authorized UNITRON®distributor can
arrange for this service. Should unexpected problems be experienced with your instrument, proceed as
follows:
1. Contact the UNITRON®distributor from whom you purchased the microscope. Some
problems can be resolved simply over the telephone.
2. If it is determined that the microscope should be returned to your UNITRON®distributor or to
UNITRON®for warranty repair, pack the instrument in its original Styrofoam shipping carton. If you no
longer have this carton, pack the microscope in a crush-resistant carton with a minimum of three inches
of a shock absorbing material surrounding it to prevent in-transit damage. The microscope should be
wrapped in a plastic bag to prevent Styrofoam dust from damaging the microscope. Always ship the
microscope in an upright position; NEVER SHIP A MICROSCOPE ON ITS SIDE. The microscope or
component should be shipped prepaid and insured.
LIMITED MICROSCOPE WARRANTY
This microscope is warranted to be free from defects in material and workmanship for a period of five (5) years for
mechanical and optical components and one (1) year for electrical components from the date of invoice to the
original (end user) purchaser. This warranty does not cover damage caused in-transit, misuse, neglect, abuse or
damage resulting from improper servicing or modification by other then UNITRON®approved service personnel.
This warranty does not cover any routine maintenance work or any other work, which is reasonably expected to be
performed by the purchaser. Normal wear is excluded from this warranty. No responsibility is assumed for
unsatisfactory operating performance due to environmental conditions such as humidity, dust, corrosive chemicals,
deposition of oil or other foreign matter, spillage or other conditions beyond the control of UNITRON Ltd. This
warranty expressly excludes any liability by UNITRON Ltd. for consequential loss or damage on any grounds, such
as (but not limited to) the non-availability to the End User of the product(s) under warranty or the need to repair
work processes. Should any defect in material, workmanship or electronic component occur under this warranty
contact your UNITRON®distributor or UNITRON® at [phone]. This warranty is limited to the continental
United States of America. All items returned for warranty repair must be sent freight prepaid and insured to Unitron
Ltd., 73 Mall Drive, Commack, NY 11725 –USA. All warranty repairs will be returned freight prepaid to any
destination within the continental United States of America. For all foreign warranty repairs, return freight charges
are the responsibility of the individual/company who returned the merchandise for repair.