General 24x User manual

24x
OPTICAL LEVEL
INSTRUCTION MANUAL

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SAFETY
Read the following safety instructions before
attempting to operate this product.
Keep these instructions in a safe place or store
in the carry case for future reference.
SAVE ALL WARNINGS AND INSTRUCTIONS
FOR FUTURE REFERENCE.
WARNING: Read and understand all
instructions.
▪Use only accessories that are recommended
for your model.
▪Tool service must be performed only by
qualied repair personnel. Repairs, service
or maintenance performed by unqualied
personnel will void the warranty. Only approved
and authorised service technicians can carry
out warranty repairs.
!
!
▪Position the optical level securely on a level
surface. Damage or serious injury could result
if the optical level falls.
WARNING: DO NOT DISASSEMBLE
THE OPTICAL LEVEL. There are no user
serviceable parts inside. Disassembling the
optical level will void all warranties on the
product. Do not modify the product in any way.

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Carry caseGeneral 24x
ITEM CHECKLIST
Please ensure the following items are included with your optical level.
If anything is missing please contact your retailer.
Plumb bob

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OPTICAL LEVEL OVERVIEW (FRONT)
5/8” x 11 tripod thread
360° protractor
Levelling screw
Bubble vial
Bubble vial mirror
Optical view guide
Front lens element
Panning screw Panning screw
Levelling screw
Base plate

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OPTICAL LEVEL OVERVIEW (SIDE)
Levelling screw
360° protractor
Optical view guide
Panning screw
Panning screw
Focusing knob
Eye piece
Levelling screw
Base plate

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SET UP OPERATION
▪Stand the tripod (part sold separately) on
a level surface with legs spaced for stability.
▪ Thread the tripod yoke through the 58”
x 11 thread on the base of the instrument.
Screw into place until secure.
▪ Centre the bubble vial by turning the
levelling screws.
USING YOUR OPTICAL LEVEL
▪Point the instrument towards the desired
area.
▪Use a bright background or hold a white
sheet of paper in front of the area. Turn the
eyepiece until the cross hairs are a sharp
black.
▪Turn the level towards the staff using the
optical view guide.
▪Turn the panning screw to set the vertical
hair down the centre of the staff.
Measurement
▪Read the staff where it is cut by the middle
hair.

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Distance measurement
▪Read the staff where it is cut by the upper
and lower hairs.
▪Calculate the distance between the upper
and lower hairs.
▪Multiply the figure by 100 to calculate the
distance between the instrument and the
staff.
Angle measurement
▪Point the instrument towards the first point.
▪Set the protractor base to 0°
▪Point the instrument towards the second
point.
▪The angle result will be in the protractor
reading.
09
08
07

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Height measurement
▪Place the instrument onto a solid tripod
between two staves.
▪Level off the optical using the bubble vial.
▪Take an accurate measurement reading
from staff A. (Example. 1.924m). Take an
accurate measurement reading from staff B
(Example. 1.712m)
▪Subtract the measurement of staff B
from staff A. (Example. 1.924m – 1.712m =
0.212m). This calculation shows that staff B
is 0.212m higher than staff A.
1.712m
1.924m
0.212m
STAFF B
STAFF A

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BUBBLE VIAL
▪Centre the bubble by adjusting the levelling
screws until level.
▪Turn the instrument 90° at a time and check
the position of the bubble inside the vial. If
the bubble moves out of the centre ring a
service and calibration is required.
CHECKING ACCURACY

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▪Take an accurate measurement reading
from Staff A. (Example. 1.696m. Subtract the
height difference that was calculated in step
3 from the current measurement reading
(Example. 1.696m – 0.212m = 1.484m).
▪Take an accurate measurement reading
from staff B. The measurement reading for
staff B should be approximately 1.484m
based on the calculation above.
▪If the compensator accuracy is less
or greater than 3mm after following the
measurements and calculations shown in
these steps, a service and calibration is
required.
COMPENSATOR
▪Place the instrument onto a solid tripod
between two staves spaced 30m to 50m
apart.
▪Level off the optical using the bubble vial.
▪Take an accurate measurement reading
from staff A. (Example. 1.924m). Take an
accurate measurement reading from staff B
(Example. 1.712m)
▪Subtract the measurement of staff B
from staff A. (Example. 1.924m – 1.712m =
0.212m). This calculation shows that staff B
is 0.212m higher than staff A.
▪Position the instrument and tripod 1m from
Staff A while keeping it in between both Staff
A and Staff B.

11
1.712m
(1.696m)
(1.484m)
1.924m
0.212m
STAFF B
STAFF A

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CARE AND MAINTENANCE
▪This is a precision measuring instrument
and should always be handled with care and
transported within the carry case provided.
▪ Whenever possible, store the instrument in
a dry, shady location.
▪Calibration of the instrument is
recommended: every six months, if ongoing
accurate levelling is required, or an impact
has occurred.
▪The operator should check the accuracy
of the instrument before precision levelling
is attempted. Failure to do so may result in
inaccurate measurements.
▪ Clean the instrument with a dry, soft cloth
after use in dusty, damp or wet conditions
before storing. Use lens paper to clean the
lens. Do not use your finger.
▪Smudges and fingerprints may be removed
with a damp tissue or a soft, lint-free cloth.

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WARRANTY
AUSTRALIA
“Our goods come with guarantees that
cannot be excluded under the Australian
Consumer Law. You are entitled to a
replacement or refund for a major failure and
for compensation for any other reasonably
foreseeable loss or damage. You are also
entitled to have the goods repaired or
replaced if the goods fail to be of acceptable
quality and the failure does not amount to a
major failure.”
For more information please visit
consumerlaw.gov.au
The General 24x comes with a 3 (three) year manufacturers warranty.
NEW ZEALAND
For more information please visit
consumerprotection.govt.nz

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To assist you with any queries or technical
questions please contact customer support
Australia: 1300 658 338
New Zealand: 0800 367 527
CUSTOMER SUPPORT

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SPECIFICATIONS
Specications General 24x
Product code 70140
Warranty 3 Years
Accuracy ±2.5mm at 1km (double run)
Compensator range 15’
Magnication 24x
Minimum focus 1m
Objective aperture 36mm
Weight (kg) 1.35
Dimensions (mm) 207 x 145 x 133

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