mg or g
A calorimeter and a thermometer.
A kitchen scale or measuring spoons are commonly used to accurately measure salt in recipes. Alternatively, a salt spoon can also be used for a more precise measurement of smaller quantities.
This measurement is made with a measuring microscope.
meter
odometer
thermometer
The engine dipstick is the only tool you can use to measure how much oil is in the engine.
Use a tape measure and measure in metres. For greater precision, measure in centimetres.
Barometer is the tool to measure air pressure
The best tool to use to measure distance underwater is
A ruler or tape measure.
You would use a thermometer to measure air temperature.