TB 9-5210-209-35
IDENTIFICATION AND DESCRIPTION
This bulletin provides instructions for the
calibration of Depth Gages (General). The manufacturers' manuals 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.
a. Model Variations. Variations among models are described in text, tables, and
figures.
b. Time and Technique. The time required for this calibration is approximately
1 hour, using the physical technique.
prescribed by TB 750-25.
b. Adjustments to be reported are designated (R) at the end of the sentence in which
they appear. When adjustments are in tables the (R) follows the designated adjustment.
Report only those adjustments made and designated with (R).
pertain to this calibration are listed in table 1.
Test instrument parameters
Performance specifications
Micrometer type (with vernier):
Thimble divisions1
0.001
in.
0.025
in.
Barrel Scale division
1
0.0001
in.
Vernier divisions
1
0 to 1
in.
Range:
1
Accuracy:
0.0003
in.
Dial indicating type:
Barrel scale divisions1
0.0005
in.
Numbered divisions
0.005
in.
1
Range:
0 to 0.125 in.
1
Accuracy:
0.001
in.
Vernier type:
Main scale divisions1
0.025
in.
0.001
in.
Vernier divisions
1
0.025
in.
Vernier scale
1
Range (with additional scale):
0 to 12
in.
1
Accuracy:
0.001
in.
Micrometer type (without vernier):
Thimble divisions1
0.001
in.
Scale divisions
0.025
in.
1
Range:
0 to 6
in.
1
Accuracy:
0.001
in.
1This
specification is for information only and is not verified in this bulletin.
