Mechanical Manifold Pressure Gauge 10 - 50 In Hg Non-TSO UMA 2-1/4

Manifold pressure is one factor used to obtain correct power setting of the engine. The indicators are temp. and altitude compensated. Matte-white dials. Dia. 2-1/4" units are new mfg. 10"-50" Hg. Interchangeable with AN5770-1.