Pittsburgh 63731 Assembly instructions

63731
Visit our website at: http://www.harborfreight.com
Email our technical support at: [email protected]
6" Digital Caliper
Owner’s Manual & Safety Instructions
Save This Manual Keep this manual for the safety warnings and precautions, assembly,
operating, inspection, maintenance and cleaning procedures. Write the product’s serial number in the
back of the manual near the assembly diagram (or month and year of purchase if product has no number).
Keep this manual and the receipt in a safe and dry place for future reference. 23e
When unpacking, make sure that the product is intact
and undamaged. If any parts are missing or broken,
please call 1-888-866-5797 as soon as possible.
Copyright©2023 by Harbor Freight Tools®. All rights reserved.
No portion of this manual or any artwork contained herein may be reproduced in
any shape or form without the express written consent of Harbor Freight Tools.
Diagrams within this manual may not be drawn proportionally. Due to continuing
improvements, actual product may differ slightly from the product
described herein. Tools required for assembly and service may not be included.
Read this material before using this
product. Failure to do so can result in
serious injury. SAVE THIS MANUAL.

Page 2 For technical questions, please call 1-888-866-5797. 63731
Specifications
Display Units Inches (Decimals), Inches (Fractions), & Millimeters
Accuracy ±0.001" (0.03mm)
Display 0.0005", 1/128", 0.01mm
Power Supply SR44 Button Battery (Included)
Important Safety Information
1. CONTAINS BUTTON BATTERY.
Keep out of your child’s reach.
Discard button batteries carefully.
Do not allow children to play with
devices that contain button batteries.
This product is not a toy.
2. Wear ANSI-approved
safety goggles during use.
3. Keep work area clean and well lit.
4. Do not operate when tired or
when under the influence of
alcohol, drugs or medication.
5. Use as intended only.
6. Inspect before every use; do not use
if parts are loose or damaged.
7. Maintain product labels and nameplates.
These carry important safety information.
If unreadable or missing, contact
Harbor Freight Tools for a replacement.
Components and Controls
inch/F
OFF
ON
ZERO
mm
OFF
ON
ZERO
OFF ON Button
in/mm
Button
ZERO Button
Battery Cover
Thumb
Knob
Lock Screw
Prongs

Page 3For technical questions, please call 1-888-866-5797.63731
Instructions
1. Remove pull tab from battery
compartment before use.
2. Push the OFF ON button, or move the
jaws to automatically turn caliper on.
3. To toggle measurement between inches
and millimeters, press in/mm button.
4. With jaws closed, press ZERO to set
readout to 0. The caliper features
last measurement memory. When
the unit is turned on, the most recent
measurement will be displayed.
5. To measure outside of object,
set the bottom prongs outside
object being measured. Slide the jaws
together until they gently contact the item.
6. To measure inside of object, set the
top prongs inside object being measured.
Spread prongs apart until they
touch surface of object.
7. When finished, press OFF ON to
turn off caliper. The unit will also
automatically shut off if left idle.
8. To replace battery, remove screw(s) and
open battery compartment. Install new
SR44 battery in correct polarity, close
compartment and replace screw(s).
inch/F
OFF
ON
ZERO
mm
OFF
ON
ZERO
inch/F
OFF
ON
ZERO
mm
OFF
ON
ZERO
Outside Measurement Inside Measurement
inch/F
OFF
ON
ZERO
mm
OFF
ON
ZERO
in/mm
OFF
ON
ZERO
mm
in/mm
OFF
ON
ZERO
mm
Depth Measurement Step Measurement

Limited 90 Day Warranty
Harbor Freight Tools Co. makes every effort to assure that its products meet high quality
and durability standards, and warrants to the original purchaser that this product is free from
defects in materials and workmanship for the period of 90 days from the date of purchase.
This warranty does not apply to damage due directly or indirectly, to misuse, abuse, negligence
or accidents, repairs or alterations outside our facilities, criminal activity, improper installation,
normal wear and tear, or to lack of maintenance. We shall in no event be liable for death,
injuries to persons or property, or for incidental, contingent, special or consequential damages
arising from the use of our product. Some states do not allow the exclusion or limitation of
incidental or consequential damages, so the above limitation of exclusion may not apply to you.
THIS WARRANTY IS EXPRESSLY IN LIEU OF ALL OTHER WARRANTIES, EXPRESS
OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS.
To take advantage of this warranty, the product or part must be returned to us
with transportation charges prepaid. Proof of purchase date and an explanation
of the complaint must accompany the merchandise. If our inspection verifies the
defect, we will either repair or replace the product at our election or we may elect
to refund the purchase price if we cannot readily and quickly provide you with a
replacement. We will return repaired products at our expense, but if we determine
there is no defect, or that the defect resulted from causes not within the scope
of our warranty, then you must bear the cost of returning the product.
This warranty gives you specific legal rights and you may also
have other rights which vary from state to state.
Record Product’s Serial Number Here:
Note: If product has no serial number, record month and year of purchase instead.
Note: Replacement parts are not available for this item. Refer to UPC 193175508232.
26677 Agoura Road • Calabasas, CA 91302 • 1-888-866-5797