a protractor
Your question is unclear but one instrument for measuring angles is a protractor.
measuring jug! kettle
a protractor
degrees
There are many instruments for measuring speed but I am not aware of any for measuring velocity.
A protractor
Your question is unclear but one instrument for measuring angles is a protractor.
measuring jug! kettle
a protractor
there is special instrument named "angle distribution measuring system" for the divergence angle measurement of LEDs. my email: bkk2003@163.com
degrees
There are many instruments for measuring speed but I am not aware of any for measuring velocity.
universal bevel protactor is an angle measuring instrument which measures acute angle ,obtuse angle as well as it is used to layout an angle. its least count is 5 minute.
A thermometer
A measuring flask.
There are special angle-measuring instruments which you can use to measure the angle.
The two common measuring instruments used by carpenters are the tape measure and the T square. The tape measure is a metal ruler that reels out from a small hand held box. The T square is two rulers in one, set at a 90 degree angle.