Pittsburgh 58231 Owner's Manual & Safety Instructions page 3

12" digital caliper
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Instructions
1. Push the OFF ON button to turn caliper on.
2. To toggle measurement between inches
and millimeters, press in/mm button.
3. With jaws closed, press ZERO
to set readout to 0.
4. To measure outside of object,
set the bottom prongs outside
object being measured. Slide the jaws
together until they gently contact the item.
Outside Measurement
Depth Measurement
Item 58231
For technical questions, please call 1-888-866-5797.
5. To measure inside of object, set the
top prongs inside object being measured.
Spread prongs apart until they
touch surface of object.
6. Press OFF ON button to turn
Caliper off. Caliper also has an
automatic OFF function.
7. Incorrect function of Caliper may indicate
low battery. Follow Battery Removal and
Replacement instructions on page 4.
Note: Replacement parts are not available.
Inside Measurement
Step Measurement
Page 3

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