MIL-DTL-55023D
Table II. Minimum graduated scale range.
Range
Increments
Type
Style
Size
(Inches)
(Inches)
Graduation
I
-
1
15-0-15
0.1 (1)
Arithmetic
I
-
2
5-0-5
0.1 (1)
Arithmetic
II
A
3
0-3
(2)
Logarithmic
II
A
4
0-7
(2)
Logarithmic
II
B
5
(3)
(3)
Arithmetic
Notes:
(1)
Even graduations. Numerical markings at 1 inch intervals.
The distance from the zero index to each 1-inch graduation on
the scale shall have a maximum tolerance of 0.025 inches.
Each 0.1 inch graduation within each index shall be accurate
within 0.010 inches. The accuracy of the graduations shall be
determined at a temperature of 80 ± 5°F.
(2)
Logarithmic graduations of 0.01 inch increments from 0
inches to 0.10 inches and 0.1 inch increments above 1 inch.
Increments between 0.1 inches and 1 inch shall be determined
by the manufacturer.
(3)
Range and graduations in even increments as specified in 6.2.
3.7.5 Table mounting stand. The table mounting stand shall be constructed of corrosion-
resistant metal or metal treated to resist corrosion. Without means for fastening attachment to the
table, the stand shall rigidly hold the manometer in a stable, vertical position.
3.7.6 Housing for type II manometers. Unless otherwise specified (see 6.2), the housing
shall be plastic.
3.7.7 Reservoir for type II manometers. Unless otherwise specified (see 6.2), the
reservoir for holding the indicator fluid shall be brass plated to resist corrosion. Reservoir
connections shall be provided O-ring seals to prevent fluid leakage. Adequate means shall be
provided to permit tight external connections when plastic tubing is used. Fittings shall be
furnished for 1/8 inch nominal pipe size connections.
3.8 Indicator fluid. The type and quantity of indicator fluid to be furnished with each
manometer shall be as specified (see 6.2).
3.9 Painting. All surfaces to be painted shall be free of grease, oil, scale, rust, dirt, other
extraneous material, and shall be dry. Painting shall be in accordance with MIL-T-704 except as
specified herein. Unless otherwise specified (see 6.2), the equipment shall be treated and painted
in accordance with the manufacturer's standard commercial practice.
3.10 Identification marking. Equipment, assemblies, and component parts shall be
marked for identification in accordance with MIL-STD-130.
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