Flour
Source: This question is taken from the Everyday Science
optical power
Eratosthenes
Wind Velocity
None OF These
Milk
Electromagnetic radio wave frequencies
Radioactivity
Lens
Lens refractive power
Pressure
Hardness
Atmospheric Pressure
3
Changes in the Earth’s Magnetic Field
Speed of Air
Blood glucose level
Wattmeter
All of these
Distance
Metre, litre and gramme
Barometer
Depth
Weight