Starrett 3754 User manual

Trust Is In The Name User Manual
PKG08762- UM3754

2 PKG08762-UM3754 12/15 PDF
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PKG08762-UM3754 3
3754 ELECTRONIC HEIGHT GAGE
USER MANUAL

4 PKG08762-UM3754
TABLE OF CONTENTS
Components 5
Specifications 8
Operating Instructions 9
New Battery, Startup Sequence 11
Installing the Batteries 13
Description of the Button Functions 14
Setting the PRESET/ABS Function 15
Setting Limits (Go/No Go Function) 16
Data Output 17
Mounting a 3808MA Test Indicator 18
Accessories 19
Cautions on Use 19
Service Information 20
Spanish 21
French 35
Italian 49
German 63
Chinese 77
Portuguese 91

PKG08762-UM3754 5
COMPONENTS
1. Scribe
- Trazador
- Pointe à tracer
- Marcatura
- Schreiber
-量测探针
- Traçador
2. Lock
- Tornillo de fijación
- Vis de blocage
- Blocco
- Sperre
-锁定装置
- Tranca
3. Display
- Pantalla
- Affichage
- Schermo
- Anzeige
-显示屏
- Visor
4. Column
- Columna
- Colonne
- Colonna
- Ständer
-支撑柱
- Coluna
5. Hardened Base
- Base templada
- Socle renforcé
- Base rinforzata
- Gehärteter Sockel
-固定座
- Base rígida
1
5
3
2
4

PKG08762-UM3754 7
3754 ELECTRONIC HEIGHT GAGE
THIS IS A STARRETT USER GUIDE FOR THE 3754 DIGITAL HEIGHT GAGE.
ALL SPECIFICATIONS IN THIS DOCUMENT ARE CORRECT AT TIME
OF PRODUCTION AND ARE SUBJECT TO CHANGE. PLEASE CONTACT
STARRETT FOR FURTHER INFORMATION.

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SPECIFICATIONS
MODEL INCH MILLIMETER
Measuring Range 12" 0-12 0-300
24" 0-24 0-600
Accuracy
12" ±.0015 ±0.04mm
24" ±.0015 (0-18") ±0.04mm
±.002 (18"-24") ±0.05mm
Resolution .0005" .01mm
Power Source Batteries - Lithium coin cells 3V (2), No. CR232 equivalent
1-1/2 years battery life with average use.
Serial Data 4800 BAUD, 8 data bits, no pairity, 1 stop bit
Fine Adjustment Lock
Data Port
Battery
Scriber
Back
Scriber Clamp
Fine Adjusting Nut
Main Slide Lock

PKG08762-UM3754 9
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OPERATING INSTRUCTIONS
GETTING STARTED
1. IMPORTANT: To start, please read through steps 3 and 4 below and familiarize
yourself with the setup of the gage.
2. Clean the bottom of the height gage and the surface plate or reference surface
being used.
3. Install the batteries that came with the height gage. Refer to "Battery Drawer
Removal" and "Battery Replacement" on page 13.
NOTE: When the new batteries are inserted into the gage, the gage will automatically
turn on, and go through a startup sequence. See step 4 below
4. Follow the instructions "New battery, Startup Sequence" and the "New Datum/
Zero Reference, Setup" section on page 11.
5. The gage is now ready to measure. You can turn on the height gage with the On/
Off button or move the slide.
6. The gage will automatically turn off (the display will go blank) after 20 minutes of
no slide movement or pressing of a button. Any movement of the slide will activate
the display with no loss of position reading.
TO ESTABLISH A ZERO REFERENCE USING AN INDICATOR
7. Ideally an indicator should be mounted on the height gage with the proper
attachment (PN: 99454 not supplied) to use as a positioning device. A test indicator
can be used if the part configuration will allow.
8. The reference zero position can be the surface plate itself, a gage block or a
reference surface on the product part.
9. Loosen the lock on the gage slide and carrier, then move the slide to a position
where the indicator contact is slightly above the zero reference surface but not
touching it. Using the fine adjustment knob, move the slide until a reading is
displayed on the indicator. Move the fine adjustment until the indicator reads zero.
10. Zero the Gage by pressing the Zero/ABS button. Now when you measure parts, the
indicator will make sure that the pressure on the part being measured is always
the same.
NOTE: If using a dial indicator, be sure to count revolutions of the indicator hand. If using
a digital Indicator, depress the ZERO button to change the display to a zero position
"0.0000" (0.00mm).

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USING A SCRIBER
11. The special scriber furnished with the height gage can be mounted using the
scriber clamp.
12. Allow the scriber to contact the surface that will be your zero reference.
13. Operation of the height gage is the same as noted above in "To Establish a Zero
Reference Using an Indicator" and below "Height Measurement".
NOTE: Use of the scriber to contact work surfaces depends on the ability of the operator to
"feel" the contact surface without exerting excess pressure on the surface with the scriber.
HEIGHT MEASUREMENT
14. Loosen the lock on the gage slide and the fine-adjust, and then move the gage into
position so that the indicator contact is directly over the surface to be measured.
15. Using the fine adjustment mechanism, move the slide until the indicator reads zero.
16. The display will show the exact dimension of the surface or feature being measured
with reference to the zero position or datum you set up.

PKG08762-UM3754 11
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NEW BATTERY, STARTUP SEQUENCE
1. Each time you put in a new set of batteries, the gage will go through a startup sequence.
2. The sequence starts out with Fig.2A and proceeds to Fig.2E. At the end of the
sequence, the display will stay at Fig.2E (CAL) and wait for your input.
3. When "CAL" is displayed, move the slide slowly up or down, until the display
changes to show the gage measuring. This movement will calibrate the indicator.
4. If you don't move the slide, "Cal" will stay on the display for only 10 seconds and
the display will go blank. To return to "Cal" mode move the slide or quickly press
the on/off button.
5. If you move the slide too fast it will take longer for the tool to initialize. This start
up feature will happen each time a battery is replaced, but will not happen each
time you turn on the gage.
FIG. 2A
FIG. 2C
FIG. 2A
FIG. 2D
FIG. 2E
Full lamp display
Catalog number shifts left
Catalog Number
Firmware version, each dash

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NEW DATUM/ZERO REFERENCE, SETUP
6. After "CAL" mode, you will need to set your datum or zero reference.The reference
zero position can be the surface plate itself, a gage block or a reference surface
on a product/part.
7. Move the slide to your zero or datum position and lock the slide, press the Shift
button followed by pressing the Preset button twice. The gage will now be zeroed.
8. To exit ABS mode press the Zero/ABS button. The display will show a dashed
line that will incrementally disappear from left to right; this is a visual clue on
how long you should wait for the tool to zero out, less than a second. Make sure
not to move the slide during that time or whenever you zero the tool make sure
the slide is locked.

PKG08762-UM3754 13
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INSTALLING THE BATTERIES
1. To install the batteries that came with the gage, first remove the two screws
pointed out in Fig.3B with a small Philips head screwdriver.
2. Fig.3C-E shows the battery drawer removed and the placement of the two CR2032
batteries, positive side up. Carefully push the battery tray into the bezel and secure
it with the two screws removed in step 1.
FIG. 3A
FIG. 3C
FIG. 3B
FIG. 3D
FIG. 3E
CR2032, Batteries x2

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DESCRIPTION OF THE BUTTON FUNCTIONS
The LIMITS and PRESET functions are used in conjunction with the SHIFT/ SET
button. To enable these functions press the SHIFT/ SET button first. The SET icon will
appear on the display, and then press the button for the re-quired function.
1 ON/OFF Power button. Press and hold for 4 seconds.
2 ± Plus/Minus sets the direction (polarity) of the reading
3 HOLD
Press the HOLD button momentarily to capture the reading
on the display. The HOLD icon will be displayed and the
measurement will stay the same on the display. To disable
HOLD, press the button again.
4 IN/mm Toggles the display between English or Metric values.
5 SHIFT/SET
Dual function button used to enable the, Preset and the Limits
(Go/No Go) function. When enabled the SET icon will be
displayed on the display.
6 ZERO/ABS
Dual Function button. Zero's the display or enables the ABS
mode. To zero the display, Press once and release. Press and
hold for 2 seconds to activate the ABS mode and then press
again quickly to exit the ABS mode.
7 LIMITS Sets the Min and Max values for the Go/No Go function. Refer
to the section, "Setting Limits" page 16.
8 PRESET
Press the SHIFT/SET button then press the PRESET button to
enable the PRESET function. Refer to the section "Setting the
PRESET Function." page 15.
FIG. 4
4/7
1
5
2
6/8
3

PKG08762-UM3754 15
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SETTING THE PRESET/ABS FUNCTION
1. Move the slide to the preset position. This can be done
using a master part or gage blocks. Care should be
taken at this point to ensure that the slide is at the
actual preset position. The slide should be locked to
prevent any mo-tion when buttons are pressed.
2. Press and hold the ZERO/ABS button until the ABS
icon appears on the Display, Fig. 5.
3. The preset values can be set to:
±99.9999 inches or ±9999.99 mm
4. Press the SHIFT/SET button followed by the PRESET
button. The SET and PRESET icons will appear on the
Display. The PRESET icon should be flashing Fig.6.
5. To move from the PRESET icon to the plus/minus sign, press the SHIFT/SET
button. The flashing, indicates that the sign is ready to be changed. To change the
sign press the PRESET button.
6. To move to the next digit, press the
SHIFT/SET button.
7. Fig.7, to increment the value of a digit
press the PRESET button.
8. Repeat steps 4, 5 and 6 until all the digits
are set to the way you want.
9. To exit the PRESET function and
establish this reading as the actual
position of the slide, press the SHIFT/
SET button until the PRESET icon is
flashing. Make sure the slide is held
properly in positioned, and then press
the PRESET button. This will record
the current position of the slide as the
PRESET position.
10. To exit PRESET mode press and hold the ZERO/ABS button. The preset position will
be remembered by the tool even if you exit ABS mode.
11. To return to ABS mode, press and hold the ZERO/ABS button until the ABS icon is
lit and the measurement shown will be relative to where you set the preset value.
FIG. 5
FIG. 6
FIG. 7

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SETTING LIMITS (GO/NO GO FUNCTION)
1. Select the units to be displayed.
2. Press the SHIFT/SET button. The SET
icon will appear in the display Fig. 8.
3. Press the LIMITS button. The MIN LIMIT
icon will appear on the display Fig. 9.
4. Press the SHIFT/SET button. The LIMIT
icon will flash.
5. Adjust the Height Gage to the desired minimum value.
6. Press the SHIFT/SET button to capture
the minimum value. The LIMIT icon will
stop flashing.
7. Press the LIMITS button again. The MAX
LIMIT icon will appear in the top middle of
the display Fig.10
8. Press the SHIFT/SET button. The LIMIT
icon will flash.
9. Adjust the Height Gage to the desired
maximum value.
10. Press the SHIFT/SET button to capture
the maximum value. The LIMIT icon will
stop flashing.
11. Press the LIMITS button. The LIMIT and
the SET icon will remain on the display.
The MAX and MIN icons will stay off as long as the reading is within the set limits.
If the measurement is beyond the set limits the display will flash and either the
MIN or MAX LIMIT icon will indicate the direction the limit has been exceeded.
12. To exit Press the LIMITS button.
FIG. 8
FIG. 9
FIG. 10

PKG08762-UM3754 17
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DATA OUTPUT
The data output cover can be carefully removed with just your fingers. When using a
data cable, hold the data cover out of the way and plug in the data cable as shown in
Fig.11A&B. The data cable is keyed, and can only be attached as shown. When you
are done using the data cable, make sure you replace the data cover to protect the
electronics from dust and liquids.
The height gage output port allows data transmission to devices that support Starrett
RS232 format;
• To connect the gage to a computer serial port, you will need Cable No. PT61963
(purchased separately)
• Our DataSure line of Wireless communications is fully compatible. You will need
Catalog No. 1500-1-N Gateway, 1500-3A-3N Endnode, and for longer distances a
1500-2-N Router. (purchased separately)
• Our 733 Smart Cables will connect the gage to a computer via a USB port, and
are fully compatible. You can use Catalog No.733SCU, 733SCKB, or 733SCM with
our 7612 or 7613 Data Multiplexer Gage for gathering information from more than
one tool at time.
• The Serial Output format is 4800 BAUD, 8 data bits, no parity, 1 stop bit, and
ASCII data.
• 16 characters followed by a carriage return (0DH) and line feed (0AH).
• Message length (18 characters) 45 MSEC
FIG. 11B
FIG. 11A
Data Output Cover
Data Cable

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MOUNTING A 3808MA TEST INDICATOR
1. The indicator attachment clamp replaces the standard scriber.This clamp provides
the means to attach dovetail equipped test indicators or electronic probes to your
height gage. The indicator is used to ensure that the downward pressure on the
part is the same as the original set zero position.
2. Remove the scriber, by loosening the screw on the carrier clamp. Put the scriber
aside in a safe place.
3. Fig.12A shows the bottom of the indicator and, points out the dovetail mount rails.
4. Fig.12B shows how to mount the indicator to the PT99454 indicator attachment
clamp and to the gage arm.
A. Points to the screw that is used to secure the indicator onto the attachment.
You will need a 3/32" Allen wrench to tighten this screw.
B. Shows the knob that is used to tighten the clamp that allows you to change
the angle of the indicator on the attachment.
5. Fig.12C shows the mounted indicator using the bottom dovetail rail. The arrows
show the approximate range of motion of the clamp.
6. Fig.12D shows another way to mount the indicator using the back dovetail rail.
3808 TEST INDICATOR
FIG. 12A
FIG. 12B
FIG. 12C FIG. 12D
Dovetail Mounts
Using the Bottom Dovetail Mount
Using the Rear Dovetail Mount
Indicator Attachment
(PT99454)
A
B

PKG08762-UM3754 19
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ACCESSORIES
PART NO. EDP NAME DESCRIPTION
3D FILE
PICTURE
PT22429 72441 Dovetail Body
Clamp
3/16" (4.8mm) diameter rod. For
use with surface gage snugs
PT11770A 71361 Tool Post Holder
1/4" x 1 5/6" (6.3 x 33mm)
post and 1/4" x 1/2" (6.3 x
12.7mm) shank
PT22428 72440
Swivel Post Snug
with Dovetail
Indicator Clamp
This snug will fit over spindles
and posts
3/32"-1/4" (2.4-6.3mm)
PT22430 72442 Snug and Rod Unit
This unit consists of a snug
(PT18724) and two 4"
(100mm) rods. One 1/4"
(6.3mm) diameter, the other a
3/8" (9.5mm) diameter.
PT27171 66457 Metric Snug and
Rod Unit
This unit consists of a snug
and two 4" (100mm) rods. One
.236" (6mm) diameter, the other
a .315" (8mm) diameter.
PT99454 68713 Indicator
Attachment
This dovetail clamp replaces
the standard scriber. See page
18 for a detailed de-scription
of the setup and use of this
attachment with your gage.
CAUTIONS ON USE
1. Do not store this instrument in areas of extreme temperature - below 10°F (-12°C)
or above 130°F (54°C).
2. For best results, operate the height gage in an area free from dust and sprays of
cutting oils, other coolants and liquids.
3. This is a precision instrument and extreme care should be taken to avoid bumping
or dropping the gage.
4. The height gage has been calibrated at 68°F (20°C). Avoid using the gage in
direct sunlight or in a draft of hot or cold air. For best results, use in a constant
temperature situation and allow time for the gage to soak at temperature for at
least one hour when transferring the tool from a temperature difference of more
than 10°F(6°C).
5. Clean the height gage vertical bar using a clean, lint-free cloth. Apply a very light coat of
lubricant. Use one or two drops of instrument oil on a finger and wipe over the vertical bar.
Move slide up and down and wipe off the excess oil.
6. Avoid any disassembly or modification of the gage, which will void all warranties.
7. Avoid using anything that might damage the buttons while pressing them.

20 PKG08762-UM3754
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SERVICE INFORMATION
The height gage has been properly assembled and calibrated at the factory. There are
no adjustments that can be made without affecting the accuracy of this instrument,
which may incur costly repairs. If the gage has been disassembled, repair charges will
be required. If a malfunction occurs, consult the following checklist to insure that the
problems are not due to improper operation of the gage.
LOSS OF ACCURACY
1. Is gage base and surface plate clean?
2. Is indicator or scriber securely fastened in place?
3. Is the indicator or scriber clean and free of debris?
4. Is accuracy being checked against a calibrated standard?
5. Is the gage being used in an extremely humid environment?
6. Is the gage subject to sprays of cutting oils, other coolants and liquids?
If the height gage is still inoperative, return it to us for repair.
Please include a letter of explanation and ship to:
Repair Department
The L.S. Starrett Company
165 Crescent Street
Athol, MA 01331-1915
PROBLEM WHAT TO CHECK
Does not count Is the gage in "HOLD" mode - Check by depressing "HOLD"
button and moving the slide.
Error Display/Over
Speed Indicator
The word "ERR04" is displayed when the gage slide is moved
at excessive speed. This feature will cancel the display rather
than show an incorrect reading.
Low Battery
The display will show a battery symbol when the batteries are
getting weak. Replace with two new CR2032 batteries.
See "Installing the Batteries" on page 13