Tests for accuracy.
For testing the accuracy of the vernier height gauge, the following conditions shall be kept in mind :
(1) The standard reference temperature of 20°C shall be maintained in the room where the
test is going to be conducted.
(2) The various tests shall be carried out by resting the height gauge on a precision surface
plate.
(3) The test measurements shall be made at a distance of 25 mm from the end of the jaw.
(4) The standard gauges shall be used for testing purposes.
(5) The slider shall be firmly clamped.
(6) The errors in the reading at any portion within the measuring range of height gauge