Instruction manual

31
To Make Relative Measurements:
Measure the first part. Change to Incremental mode by pressing the red
button on the display. Press the zero key. Measure the second part.
The difference in length will be shown on the display. When finished
taking relative measurements, press and hold the red button on the
display for three seconds to return to Absolute mode.
Tips for Measuring Long Parts:
1. When measuring long parts, keep them parallel to the caliper rail
(and as close as possible).
2. Support the object being measured so it is as straight as possible.
Maintenance:
ProCaliper must be kept clean to measure accurately. The measuring
edges of the jaws and the bearing ways must be kept free of dust, dirt,
and other residue. Clean often using a nonabrasive cleaner.
Inconsistent measurements often indicate ProCaliper's jaws or bearings
need realignment or adjustment. The Digital Display should be cleaned
periodically with compressed air to remove any dust on the lens and
keys. All fasteners should be checked occasionally for tightness.
Periodically check the jaw alignment, particularly after rough or
prolonged use.
Checking Bearing Adjustment:
ProCaliper's moving head has four white, cylindrical bearings which help
it to slide easily along the caliper rail. These bearings, made of UHMW
plastic, slide in grooves located on the front and rear of the caliper rail.
The two bearings on the rear side have small spring plungers which keep
the moving head at a constant distance from the caliper rail. The spring
load on the bearings may have to be adjusted after prolonged use. To
adjust the load, loosen the lock nuts on the spring plungers several turns.
Tighten each spring plunger until the spring bottoms out. Loosen each
screw 1/2 turn, then tighten the lock nuts. Check for smooth sliding
operation and adjust again if necessary.