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National Stock Number:
6645-00-290-0925
Federal Supply Class:
6645
National Item Identification Number:
002900925
Description:
CHRONOMETER
Detail:
AN INSTRUMENT FOR PRECISELY DETERMINING TIME, MANUFACTURED TO CLOSE TOLERANCES TO ASSURE THE TIME-KEEPING QUALITIES OF DEPENDABILITY AND CONSISTENCY OF RATE. THESE QUALITIES ARE ACCURATELY ASCERTAINED BY COMPARISON WITH MORE EXACT DEVICES OR BY ASTRONOMICAL METHODS SO THAT THE ACCUMULATED ERROR MAY BE TAKEN INTO ACCOUNT WHEN DETERMINING TIME. ITS USUAL USES ARE TO INDICATE TIME FOR NAVIGATIONAL PURPOSES, AND TO SERVE AS A REFERENCE FOR LESS ACCURATE TIMEPIECES. IT IS USUALLY PROVIDED WITH A WINDING INDICATOR DIAL AND IS USUALLY MOUNTED IN GIMBALS TO MAINTAIN THE INSTRUMENT IN A LEVEL POSITION. MAY CONSIST OF A SPRING DRIVEN OR OTHER TYPE OF MOVEMENT WHICH IS CAPABLE OF EXACTING PERFORMANCE WITHOUT REGULATION THROUGHOUT THE NORMAL RANGE OF ROOM TEMPERATURES. NOT DESIGNED FOR CARRYING ON THE PERSON.
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Techincal Specification:
| DEPARTURE FROM CITED DOCUMENT | NIA | | BACKGROUND COLOR | WHITE, SILVER | | DIAL SCALE MARKING LUMINOSITY | NONLUMINOUS | | LUMINOUS NUMERAL | NOT INCLUDED | | INSCRIPTION COLOR | BLACK | | HAND QUANTITY | 4 | | HAND DESIGNATION | HOUR HAND AND | | MINUTE HAND AND | | SECOND HAND AND | | WIND INDICATOR HAND | | HAND TYPE | SWEEP AND | | ECCENTRIC | | LUMINOUS HAND | NOT INCLUDED | | JEWEL QUANTITY | 14 | | MOVEMENT SIZE DESIGNATION | 85 | | MAXIMUM RUNNING TIME | 56.000 HOURS | | WINDING METHOD | KEY | | ESCAPEMENT TYPE | DETENT | | CORRECT TIME RESET TYPE | KEY | | CASE MATERIAL | BRASS | | CASE SURFACE TREATMENT | LACQUERED FINISH | | CRYSTAL TYPE | GLASS | | CARRYING CASE | NOT PROVIDED | | TIME TYPE | MEAN SOLAR | | MOUNTING METHOD | GIMBAL CASE | | MOUNTING CASE | NOT INCLUDED |
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