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		                             National Stock Number: 5210-00-273-1937
  Federal Supply Class: 5210
  National Item Identification Number: 002731937
  Description: HEAD,PROTRACTOR,COMBINATION SQUA
  Detail: AN ACCESSORY TOOL FOR ATTACHING TO BLADE OF SQUARE, COMBINATION USED FOR CHECKING AND SETTING BEVELS, TRANSFERRING ANGLES AND LAYOUT WORK. CONSISTS OF ROTATABLE GRADUATED DISK, MOUNTED ON A METAL FRAME BASE. A DEVICE IS PROVIDED FOR ATTACHING TO AND LOCKING ON A STEEL RULE BLADE.
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  Manufacturer Information:
 | 05-12INCH | 37163 | COOPER INDUSTRIES INC LUFKIN/COOPER TOOLS DIV |  | A-A-3179 | 58536 | FEDERAL COMMERCIAL ITEM DESCRIPTION PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC |  | A-A-3179 TY1 | 80244 | GENERAL SERVICES ADMINISTRATION FEDERAL SUPPLY SERVICE |  | GGG-S-656 TY6CLA | 80244 | GENERAL SERVICES ADMINISTRATION FEDERAL SUPPLY SERVICE |  | GGG-S-656 | 81348 | FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC |   
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  Techincal Specification:
 | GENERAL CHARACTERISTICS ITEM DESCRIPTION | CAST IRON; BLACK WRINKLE FINISH; NON-REVERSIBLE; FOR 12 IN. COMBINATION SQUARE |  | NONDEFINITIVE SPEC/STD DATA | 1 TYPE |   
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