Code 91

With 0-5 in. Hg vacuum applied to transducer, display should be "01" when read/hold switch is moved to "HOLD" position. With 5-15 in. Hg vacuum applied to transducer, display should be "02" when read/hold switch is moved to "HOLD" position. With more than 15 in. Hg vacuum applied to transducer, display should be "03" when read/hold switch is moved to "HOLD" position.