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.
A thermometer
A measuring flask.
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.
There are special angle-measuring instruments which you can use to measure the angle.
Carpenters commonly use a tape measure as their main measuring instrument. They may also use other tools such as a carpenter's square, a level, or a measuring wheel for specific measurements or tasks.