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SPHEROMETER
SPHEROMETER
AA-S0022
A spherometer is used to measure either very small thickness of flat material or the radius of curvature of a spherical surface
- Three fixed
legs of equal lengths.
- Screw passes
through the centre of the tripod frame parallel to the three legs.
- A large
circular disc graduated with 100 equal parts is attached to the top of the
screw called ‘circular scale’.
- On turning the
screw in the clockwise direction, the tip of the screw will move downward.
- On turning
the screw in the anticlockwise direction, the tip of the screw will move
upward.
- A small
vertical scale known as the Pitch scale with the scale reading divided into millimeters
is fixed at one end of the tripod frame.
