NSN 6645-00-163-4568
Part Details | CHRONOMETER
6645-00-163-4568 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.
Alternate Parts: ITEM0762, 6645-00-163-4568, 00-163-4568, 6645001634568, 001634568
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 66 | NOV 12, 1971 | 00-163-4568 | 18695 ( CHRONOMETER ) |
REFERENCE DRAWINGS & PICTURES
Cross Reference | NSN 6645-00-163-4568
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| ITEM0762 | 89227 | MARITIME ADMINISTRATION |
Technical Data | NSN 6645-00-163-4568
| Characteristic | Specifications |
|---|---|
| BACKGROUND COLOR | SILVER |
| DIAL OUTSIDE DIAMETER | 6.000 INCHES |
| SCALE QUANTITY | 1 |
| SCALE NAME | 12 HOUR |
| SCALE RANGE | +0.0 TO +12.0 HOUR |
| GRADUATION UNIT | 1.000 HOUR |
| LUMINOUS DIAL | NOT INCLUDED |
| DIAL SCALE MARKING LUMINOSITY | NONLUMINOUS |
| DIAL SCALE MARKING COLOR | BLACK |
| MAJOR GRADUATION COLOR | BLACK |
| MINOR GRADUATION COLOR | BLACK |
| LUMINOUS NUMERAL | NOT INCLUDED |
| INSCRIPTION COLOR | BLACK |
| SEPARATE TOTALIZER DIAL | NOT INCLUDED |
| HAND QUANTITY | 3 |
| HAND DESIGNATION | GREENWICH TIME HOUR HAND AND MINUTE HAND AND SECOND HAND |
| HAND TYPE | SWEEP AND SWEEP AND SWEEP |
| HAND COLOR | BLACK AND BLACK AND BLACK |
| LUMINOUS HAND | NOT INCLUDED |
| JEWEL QUANTITY | 21 |
| MOVEMENT SIZE DESIGNATION | 6 |
| MAXIMUM RUNNING TIME | 48.0 HOURS |
| MOVEMENT TYPE | CONTINUOUS RUNNING |
| WINDING METHOD | D ANY ACCEPTABLE |
| WINDING DEVICE LOCATION | BD ANY ACCEPTABLE |
| NONMAGNETIC CHARACTERISTIC | INCLUDED |
| SHOCKPROOF FEATURE | NOT PROVIDED |
| STRIKING MECHANISM | NOT INCLUDED |
| CIVIL DATE INDICATOR | NOT INCLUDED |
| ESCAPEMENT TYPE | D ANY ACCEPTABLE |
| CORRECT TIME RESET TYPE | STEM |
| CASE MATERIAL | BRASS |
| CASE SURFACE TREATMENT | POLISHED |
| FACE TYPE | J ANY ACCEPTABLE |
| CRYSTAL TYPE | B ANY ACCEPTABLE |
| BEZEL TYPE | INTEGRAL BEZEL AND CASE HINGED TO MOUNTING PLATE |
| WATERPROOF FEATURE | NOT INCLUDED |
| SUBMERSIBILITY | NONSUBMERSIBLE |
| CARRYING CASE | PROVIDED |
| TIME TYPE | MEAN SOLAR |
| OVERALL LENGTH | 8.250 INCHES NOMINAL |
| OVERALL WIDTH | 7.000 INCHES NOMINAL |
| OVERALL HEIGHT | 5.000 INCHES NOMINAL |
| MOUNTING METHOD | GIMBAL CASE |
| MOUNTING CASE | INCLUDED |