[INCH-POUND]
A-A-2576A
April 30, 1992
SUPERSEDING
January 14, 1988
COMMERCIAL ITEM DESCRIPTION
SCALE, AREA (TRANSPARENT PLASTIC)
The General Services Administration has authorized the use of this commercial
item description in preference to Federal Specification GG-S-150
This description covers transparent plastic scales for measuring and estimating areas of land and for use in map estimating of land and shall be furnished in two types, as specified:
Type I - Circle and grid method
Type II - Dotted square method
Salient characteristics.
Material and construction. Clear, transparent acrylic
or vinyl plastic and shall be thin, flat with a rectangular shape.
Dimensions.
Type I - 5-1/4 by 2-5/8 inches, approximately
Type II - 6-3/8 by 2-5/8 inches, approximately
Graduations and markings. Shall be permanent and colored and shall a
tolerance of + 0.015 inches.
Type I (figure 1)
Linear scales.
10 scale (5 inches long) divided in 1/10 of an inch and
numbered every inch.
1320 scale - 1 inch = 1320 feet, divided in 100 feet and numbered every 400
feet.
*660 scale - 1 inch = 660 feet, divided in 50 feet and numbered every 200 feet.
* Mile scale - 8 inches = 1 mile, divided and numbered at 1/8, 1/4 and 1/2
mile.
* May be compiled into one.
Area scales.
A circle to indicate each of the areas of .1, .2, .4, .6, .8, 1.0, 1.2/1.5, 2.0, 2.5 and 3.0 acres. For direct acreage reading on a 600 scale (figure 1).
Multiple squares to indicate .1, .5, 1.0, 2.5, 5.0, 10 acres. Square measure ratio of 1 square inch = 10 acres.
DISTRIBUTION STATEMENT A: Approved
for public release; distribution is unlimited.
For Parts Inquires submit RFQ to Parts Hangar, Inc.
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