Product Details | CHRONOMETER
6645-00-990-9422 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.
Part Alternates: 21, 6645-00-990-9422, 00-990-9422, 6645009909422, 009909422
Instruments and Laboratory Equipment | Time Measuring Instruments
| Supply Group (FSG) | NSN Assign. | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 66 | 01 JAN 1960 | 00-990-9422 | 18695 ( CHRONOMETER ) |
Demand History | NSN 6645-00-990-9422
Cross Reference | NSN 6645-00-990-9422
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 21 | 26992 | HAMILTON WATCH CO INC |
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Related Products | NSN 6645-00-990-9422
6645-00-991-0877, 6645-00-991-7175, 6645-00-991-7399, 6645-00-991-8704, 6645-00-992-9052
Technical Data | NSN 6645-00-990-9422
| Characteristic | Specifications |
|---|---|
| BACKGROUND COLOR | SILVER |
| SCALE NAME | 12 HOUR |
| 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 SWEEP AND ECCENTRIC AND SWEEP |
| HAND COLOR | BLACK AND BLACK AND BLACK AND BLACK |
| 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 | POLISHED |
| CRYSTAL TYPE | GLASS |
| CARRYING CASE | PROVIDED |
| TIME TYPE | MEAN SOLAR |
| MOUNTING METHOD | GIMBAL CASE |
| MOUNTING CASE | INCLUDED |
| MANUFACTURERS CODE | 26992 |
| DESIGN CONTROL REFERENCE | 21 |
Restrictions/Controls & Freight Information | NSN 6645-00-990-9422
| Category | Code | Description |
|---|---|---|
| Hazardous Material Indicator Code | N | There is no data in the HMIS and the NSN is in an FSC not generally suspected of containing hazardous materials |
| Demilitarization Code: | A | Non-Munitions List Item/ Non-Strategic List Item - Demilitarization not required. |
| Precious Metals Indicator Code: | U | Precious metal type is unknown |
| Criticality Code: | X | The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. |
| Category | Code | Description |
|---|---|---|
| No Freight Information | ||