| SCALE QUANTITY | 2 |
| SCALE NAME | ALTITUDE AND |
| BAROMETRIC PRESSURE |
| SCALE MARKING AND SURFACE FINISH | LETTERS NONLUMINOUS AND |
| NUMERALS NONLUMINOUS AND |
| LINED INCREMENTS NONLUMINOUS |
| SCALE SMALLEST INCREMENT GRADUATION | 20 FT,0.020 IN. |
| NONLUMINOUS SCALE MARKING AND COLOR | LETTERS WHITE AND |
| LINED INCREMENTS WHITE AND |
| NUMERALS WHITE |
| POINTER QUANTITY | 2 AND |
| 1 |
| POINTER FINISH | NONLUMINOUS |
| KNOB QUANTITY | 1 |
| KNOB PURPOSE | FOR SETTING BAROMETRIC SCALE |
| OVERALL WIDTH | 3.250 INCHES NOMINAL |
| OVERALL HEIGHT | 3.250 INCHES NOMINAL |
| OVERALL DEPTH | 3.875 INCHES MINIMUM AND |
| 4.125 INCHES MAXIMUM |
| MOUNTING METHOD | THREADED BEZEL |
| MECHANICAL CONNECTION QUANTITY | 1 |
| MECHANICAL CONNECTION SIZE | 1/8 IN. |
| MECHANICAL CONNECTION TYPE | INTERNAL PIPE |
| NONDEFINITIVE SPEC/STD DATA | MB-1A TYPE |
| SPEC/STD CONTROLLING DATA | |
| MANUFACTURERS CODE | 81349 |
| NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | MILA6863 |
| MANUFACTURERS CODE | 96906 |
| DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | MS28044L1A |