SCOTT

[ Aircraft Instruments and Gauges-Namely, Air Temperature and Oil Pressure Gauges, and Ammeters; ] Measuring and Testing Apparatus for Breathing Equipment and Components Thereof, and Portable Direct-Reading Toxic Gas Detectors of the Type for Use in Conjunction with Breathing Equipment [ with a Hand Operated Bellows Pump and Interchangeable Glass Detector Tubes Calibrated to Show the Amount of Toxic Gas Present in the Air Being Tested ]