TB 9-5210-208-24
IDENTIFICATION AND DESCRIPTION
1. Test Instrument Identification.
This bulletin provides instructions for the
calibration of Vernier Calipers, Type 1, Classes 1, 2, and 3 Digital and Dial Calipers (fig.
1). The GSA Supply Catalog, and manufacturers' catalogs and specifications were used as
the prime data sources in compiling these instructions. The equipment being calibrated
will be referred to as the TI (test instrument) throughout this bulletin.
NIB
Slide
Movable Jaw
Vernier Plate
Locking Screws
Fine Adjustment
Beam with main
scale
a. Model Variations. Type 1: Caliper, vernier; Class 1: English measure; Class 2:
Metric measure; Class 3: English and metric measure.
b. Time and Technique. The time required for this calibration is approximately
1 hour, using the physical technique.
2. Forms, Records, and Reports
a. Forms, records, and reports required for calibration personnel at all levels are
prescribed by TB 750-25.
b. Adjustments to be reported are designated (R) at the end of the sentence in which
they appear. Report only those adjustments made and designated with (R).