TB 9-5210-213-50
IDENTIFICATION AND DESCRIPTION
This bulletin provides instructions for the
1. Test Instrument
Identification.
calibration of Precision Level, Starrett Model 199. The manufacturer's manual and
Commercial Item Description A-A-50685 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. None.
b. Time and Technique. The time required for this calibration is approximately 1
hour, using the physical technique.
2. Forms,
Records, and
Reports. Forms, records, and
reports required for
calibration
personnel at all levels are prescribed by TB 750-25.
3. Calibration
Description. TI
parameters and
performance specifications which
pertain to this calibration are listed in table 1.
Test instrument parameters
Performance specifications
Precision level
Range: 0.0015 inch per 12 inches
Sensitivity: .0005 inch per 12 inches
EQUIPMENT REQUIREMENTS
4. Equipment
Required. Table 2 identifies the
specific equipment to be
used in this
calibration procedure. This equipment is issued with Secondary Transfer Calibration
Standards Set NSN 4931-00-621-7878. Alternate items may be used by the calibrating
activity when the equipment listed in table 2 is not available. The items selected must be
verified to perform satisfactorily prior to use and must bear evidence of current calibration.
The equipment must meet or exceed the minimum use specifications listed in table 2.
5. Accessories Required. The
accessories required for this
calibration are common
usage accessories issued as indicated in paragraph 4 above and are used in this calibration
procedure.
Table 2. Minimum
Specifications of
Equipment Required
Minimum use
Manufacturer and model
Common name
specifications
(part number)
SURFACE PLATE
Accuracy: 0.0001 in.
7900123
Grade AA