[INCH-POUND]
A-A-52024
March 12, 1991
COMMERCIAL ITEM DESCRIPTION
COMPASSES, MAGNETIC: SURVEYOR’S AND TRANSIT, POCKET; WITH OPTIONAL BALL AND SOCKET JOINT OR BALL AND SOCKET HEAD, AND JACOB’S STAFF
The General Services Administration has authorized the use of this commercial item description in preference to Federal Specification CC-C-560D.
This commercial item description covers two types of magnetic compasses, and includes the optional ball and socket joint, or ball and socket head, and Jacob’s staff. Type I compasses are intended for use in topographical surveying field work done by the U.S Forest Service. Type II compasses are used in geology and survey reconnaissance.
General salient characteristics:
Design: The compasses shall consist of a compass box, clinometers, magnetic needle, circular level vial, mechanism to permit declination adjustment, front and rear sights, graduated circles and scales, and when specified herein, a Jacob’s staff, ball and socket joint, or ball and socket head and a carrying case.
Classification. Magnetic compasses covered by this specification shall be the following types, classes, and styles as specified.
Type I - Surveyor’s magnetic compass using ball and socket joint.
Type II – Magnetic compass (pocket transit) using ball and socket head.
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Beneficial comments recommendations, additions, deletions clarifications, etc. and other data which may improve this document should be sent by letter to: U.S. Army Belvoir Research, development and Engineering Center, ATTN: STRBE-TSE, Fort Belvoir, VA. |
DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited.
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