Caution
When measuring an object beyond the range of the height gage, lift the base with a block. Then the zero point is the platform surface and the starting point is the surface of the block or object. If the starting point is the block, preset the height of the block (the height should be measured by a more accurate instrument). If the starting point is the surface of the measured object, preset the height of the surface (the height is designed value or actual value, according to actual needs).