 barometer barometer
 pipet pipet
 sextant sextant
 tape tape
 thermometer thermometer
 level level
 microscope microscope
 telescope telescope
 clock clock
 stethoscope stethoscope
 stopwatch stopwatch
 sundial sundial
 protractor protractor
 syringe syringe
 speedometer speedometer
 indicator indicator
 metronome metronome |