The MA-10 is designed for high altitude (40,000 ft (12,200 m) MSL) military operations.
Compressed scale model: Single revolution eliminates altitude confusion while maintaining the traditional Altimaster face below 8000 ft (2438 m).
Linear scale model: One (1) revolution of the dial is 12,000 ft (4,000 m).
For training purposes the instrument has a simple zero function. For operational use the DZ altitude and barometric pressure may be programmed in-flight; MA-10 will display the correct AGL altitude above the DZ.
The unit is based on a stepper motor design and is extremely robust; dropping the instrument will not damage the mechanism.