A. Ophthalmoscope
B. Richter Scale
C. Virtual and Erect
D. Telescope
A. Photodiode
B. Centrifuge
C. Retinoscope
D. Light year
A. Photodiode
B. Taceometer
C. Transformer
D. Polaroid
A. Ophthalmoscope
B. Spectrometer
C. Seismograph
D. Sonar
A. Transformer
B. Coronagraph
C. Altimeter
D. Photodiode
A. Retinoscope
B. Periscope
C. Ophthalmoscope
D. Microscope
A. Sonar
B. Transformer
C. Photodiode
D. Microphone
A. Taceometer
B. Audiometer
C. Stroboscope
D. Photodiode
A. Audiometer
B. Retinoscope
C. Radio Telescope
D. Stroboscope
A. Taceometer
B. Chronometer
C. Virtual and Erect
D. Sonar