master power switch   

vehicle master power switch

уard master / yard-master

bus-tie switch; bus tie switch

ATR switch (anti-transmit-receive switch)

selector lever, fire selector, fire switch, fire selector switch

momentary switch; push-switch

starting power switch

Switch the VTX into pit mode (low output power, if supported)

high-power illuminator radar / high power illuminating radar (HIPIR)

chief master sergeant

harbor master

jump master (jumpmaster)

master (naut.)

Master Air Attack Plan (MAAP)

Master Chief Petty Officer (MCPO)

Master Chief Petty Officer of the Navy

master control station

master gunnery sergeant

Master Sergeant (MSGT)

Master Warrant Officer (MWO)

NATO Master Cross Reference List (NMCRL) (logistics)

master-slave configuration

master-slave operation

Assistant Master General of Ordnance

brake master cylinder

master rod

solid type master rod

master fire light

master gyro vertical

master station

jump master

pack master