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National Stock Number:
6675-00-664-4676
Federal Supply Class:
6675
National Item Identification Number:
006644676
Description:
COMPUTER,STADIA CIRCULAR SCALE
Detail:
(ALL EXCEPT USA) FOR USA INC 11383 CANCELED REPLACED BY SLIDE RULE: INC 04375, FIIG T302, APPL KEY A. A COMPUTER HAVING A STATIONARY OUTER SCALE CONCENTRIC WITH AN INNER SCALE IMPRINTED ON THE PERIPHERY OF A REVOLVING DISK. IT IS USED TO DETERMINE HORIZONTAL DISTANCES AND DIFFERENCES IN ELEVATION IN SURVEYING WORK.
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Manufacturer Information:
| MIL-C-12103 | 81349 | MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M |
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Techincal Specification:
| GENERAL CHARACTERISTICS ITEM DESCRIPTION | PLASTIC W/SQUARE BASE; BASE SCALE GRADUATED IN LOGARITHMS TO BASE 10 OF NUMBERS 0.5 TO 1000; ELEVATION SCALE DIFFERENCE ON THE DISC SHALL BE GRADUATED IN LOGARITHMS TO BASE 10,OF ONE HALF THE SINE OF TWICE THE ANGLES FROM 3 MINUTES TO 45 DEGREES; HORIZONTAL DISTANCE SCALE ON THE DISC SHALL BE GRADUATED TO THE LOGARITHMS BASE 10,OF THE COSINE SQUARED OF THE ANGLES FROM 0 TO 45 DEGREES |
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