TB 9-6670-254-50
IDENTIFICATION AND DESCRIPTION
This bulletin provides instructions for the
calibration of Weights (Mass) General within the range up to 200 pounds. NBS Circular 3,
Section V, and NBS Circular 547, Section 1, 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, except in paragraph 12. The J5000S will be
referred to as TI.
a. Model Variations. None.
b. Time and Technique. The time required for this calibration is approximately 20
minutes per weight, using the physical technique.
2. DA Form 2416 (Calibration Data Card)
prescribed by TB 750-25. DA Form 2416 must be annotated in accordance with TB 750-25
for each calibration performed.
b. Adjustments to be reported on DA Form 2416 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 tables 1 through 6.
NOTE
Secondary Reference Laboratories are not equipped to calibrate
Class S and S-1 weights over the entire range. Tables 4
through 6 are included to allow calibration and
intercomparison of weights where the tolerances can be met.
Test instrument
Gram
Tolerance (Mg)
pound
equivalent
C
Q
T
1
200
90718.474
N/A
9000
28,000
100
45359.237
N/A
4600
14,000
50
22679.619
1296
2200
8200
25
11339.809
778
1140
4800
20
9071.847
778
900
4000
15
6803.886
648
680
3400
10
4535.924
518
460
2600
9.5
4309.128
486
435
---
1
8
3628.739
390
360
2200
See footnote at end of table.