Measuring

scale ruler thermometer weight osteometer instrument spectrometer geometrid drosometer anemometer backstaff heliograph spirograph barometer acoumeter measurement quadrant sundial colorimetry optic heliometer oscilloscope multimeter gauge block pluviometer yardstick talyrond pack year magnetograph across variable tape measure perforation gauge time of flight mass spectrometry cephalometer measure risk assessment telethermoscope ohmmeter windmeter octant dimensioner gallon test inch rule degree tablespoon age unit time year size clock distance temperature weigh hour yard level watch volt mile altitude count experiment carat month population report height thick tape foot