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		                             National Stock Number: 5210-00-223-9620
  Federal Supply Class: 5210
  National Item Identification Number: 002239620
  Description: DISK,MASTER,STANDARD
  Detail: A PRECISION MASTER REFERENCE TOOL USED AS A STANDARD FOR SETTING MICROMETER CALIPERS AND SNAP GAGES; ALSO IN SETTING UP AND CHECKING COMPARATORS. IT CONSISTS OF A FLAT STEEL DISK, OR A CYLINDER, PRECISION GROUND AND LAPPED TO SIZE.
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  Manufacturer Information:
 | 01-1214-00 | 60998 | S-T INDUSTRIES, INC. |  | 01-1214-9700 | 60998 | S-T INDUSTRIES, INC. |  | 599-657-16 | 09058 | BNS HOLDING INC. DBA BNS CO DIV PRECISION MEASURING INSTRUMENTS TESA USA |  | 7901823 | 19200 | US ARMY ARDEC RDECOM |  | 137 | 57163 | L.S. STARRETT COMPANY (THE) |  | GGG-C-105 | 81348 | FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC |   
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  Techincal Specification:
 | DIAMETER | 1.000 INCHES NOMINAL |  | END SHAPE | FLAT |  | HANDLE | NOT FURNISHED |  | MARKINGS | 1 INCH STD |   
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