| KNOB PURPOSE | FOR SETTING BAROMETRIC SCALE |
| KNOB QUANTITY | 1 |
| OVERALL DEPTH | 5.000 INCHES NOMINAL |
| OVERALL HEIGHT | 3.250 INCHES NOMINAL |
| OVERALL WIDTH | 3.250 INCHES NOMINAL |
| MECHANICAL CONNECTION SIZE | 1/8 IN. |
| MECHANICAL CONNECTION TYPE | INTERNAL PIPE |
| MECHANICAL CONNECTION QUANTITY | 1 |
| MOUNTING METHOD | PANEL |
| NONDEFINITIVE SPEC/STD DATA | MA-1 TYPE |
| POINTER FINISH | FLUORESCENT |
| POINTER QUANTITY | 4 |
| SCALE QUANTITY | 3 |
| SCALE MARKING TRANSPARENCY | FLUORESCENT |
| SCALE MARKING | LETTERS AND NUMERALS AND LINED INCREMENTS |
| SCALE NAME | ALTITUDE AND BAROMETRIC PRESSURE |
| SCALE SMALLEST INCREMENT GRADUATION | 20 FT; 200 FT; 2000 FT; 0.020 IN. |