Mechanical
pressure sensors: altimeter, barometer, barograph, pressure gauge, air speed indicator, rate-of-climb indicator, variometer
gas and liquid flow sensors: flow sensor, anemometer, flow meter, gas meter, water meter, mass flow sensor
gas and liquid viscosity and density: viscometer, hydrometer, oscillating U-tube
mechanical sensors: acceleration sensor, position sensor, selsyn, switch, strain gauge
humidity sensors: hygrometer