The size of the kidney is often measured by radiology imaging such as ultrasounds or CT scans. The functions of the kidney can be measured by a variety of blood and urine tests, including BUN, creatinine, urinalysis and levels of urine sodium/calcium/creatinine, urine cultures, etc.
measuring jug! kettle
Speedometer
a protractor
a protractor
There are many instruments for measuring speed but I am not aware of any for measuring velocity.
A thermometer
A measuring flask.
a instrument used for measuring blood pressure
A measuring cylinder
Meter stick
Zero error is necessary for measuring instruments for measuring accurate results because it helps to check that the instrument which we are using is whether correct or wrong
force gages, torque gages