1 Answers
Option 1 : Profilometer
Explanation:
Profilometer:
- A profilometer is a compact device that can be used for the direct measurement of surface texture. The profilometer is capable of measuring roughness together with waviness and any other surface flaws.
Autocollimator:
- An autocollimator is an optical instrument that is used to measure small angles with very high sensitivity.
- The autocollimator has a wide variety of applications including precision alignment, detection of angular movement, verification of angle standards, and angular monitoring over long periods.
- An autocollimator is essentially an infinity telescope and a collimator combined into one instrument.
[ alt="RRB JE ME 57 15Q Metrology CH 1 Hindi - Final Diag(Deepak) images Q10" src="https://storage.googleapis.com/tb-img/production/19/07/RRB_JE_ME_57_15Q_Metrology_CH_1_Hindi%20-%20Final_Diag%28Deepak%29_images_Q10.PNG">
Clinometer:
- It is an instrument for measuring angles of slope, elevation, or depression of an object with respect to the ground.
- While the spirit level is restricted to relatively small angles, clinometers can be used for much larger angles.
- Clinometers are used to determine the straightness and flatness of surfaces.
Optical square:
- Optical square and Prism square are instruments used to set out a right angle to a chain line.
- It is more convenient and accurate than cross-staff for setting out right angles. Consists of two mirrors making a 45° with each other, one mirror totally silvered another top-bottom un-silvered.
4 views
Answered