A. Anemometer
B. Hygrometer
C. Electroscope
D. Ammeter
A. Audiometer
B. Electroscope
C. Radio Telescope
D. Photodiode
A. Audiometer
B. Centrifuge
C. Taceometer
D. Retinoscope
A. Seismograph
B. Pyrometer
C. Centrifuge
D. Taceometer
A. -30 Degree
B. -40 Degree
C. -70 Degree
D. -10 Degree
A. Telescope
B. Pyrometer
C. Electroscope
D. Seismograph
A. Radio Telescope
B. Microphone
C. Stethoscope
D. Audiometer
A. Thermometer
B. Voltmeter
C. Light year
D. Richter Scale