They are surveying instruments used to measure angles.
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In Vernier Theodolites, vernier are used for taking the readings. These theodolites are most commonly used in the general works. Most of the general Theodolites can read upto 20"
Meters are used to measure length.Meters are used to measure length.Meters are used to measure length.Meters are used to measure length.
No it is used to measure pressure
A protractor can be used to measure an angle.
there are many instruments used to measure length . measuring tape is used to measure the length of room.