TB 9-6635-203-35
SECTION I
IDENTIFICATION AND DESCRIPTION
This bulletin provides instructions for the
1. Test Instrument Identification.
calibration of Dial Indicating Tensiometers MIL-T-7638 and MIL-T-38760.
The
manufacturer's manual, MIL-T-7636, and MIL-T-38760 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. Locations of handle latch, pointer, actuating handle, and
unlock button varies according to manufacturer.
b. Time and Technique. The time required for this calibration is approximately 1.5
hours, using the physical technique.
2. DA Form 2416 (Calibration Data Card). Forms, records, and reports required for
calibration personnel at all levels are prescribed by TB 750-25. DA Form 2416 must -be
annotated in accordance with TB 750-25 for each calibration performed.
3. Calibration Description. TI parameters and performance specifications which
pertain to this calibration are listed in table 1.
Table 1. Calibration Description
Test instrument parameters
Performance specifications
Tension (weight)
Range: 10 to 200 lbs
5% of averaged 3 readings
Accuracy:
SECTION II
EQUIPMENT REQUIREMENTS
calibration procedure. This equipment is issued with Secondary Transfer Calibration
Standards Set AN/GSM-287. 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. The
accuracies listed in table 2 provide a four-to-one ratio between the standard and TI.
paragraph 4 above and are used in this calibration procedure. When necessary, these items
may be substituted by equivalent items, unless specifically prohibited.
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