| GRIMES AEROSPACE COMPANY | |
| 0.926 INCHES MINIMUM AND 0.943 INCHES MAXIMUM | |
| 0.095 INCHES MINIMUM AND 0.105 INCHES MAXIMUM | |
| 0.330 INCHES MINIMUM AND 0.340 INCHES MAXIMUM | |
| 1 | |
| FLANGE | |
| REVERSED INSCRIPTION METHOD | |
| TRANSLUCENT LENS | |
| R IGV FACE AND MALFUNCTION | |
| BLACK, FED STD 595, 37038 FACE | |
| BLACK, FED STD 595, 37038 INSCRIPTION BACKGROUND | |
| YELLOW, AVIATION LENS | |
| GLASS LENS | |
| MIL-C-7989,CL B MIL SPEC SINGLE MATERIAL RESPONSE LENS | |
| FINE GROUND BACK | |
| PAINTED FACE | |
| 56 FLAT |
