ZERO ERROR IN VERNIERS AND MICROMETERS
Zero Error
When using Vernier Calipers, we have to check for zero error. This is to check whether two zero
marks coincide with each other when we are not measuring anything (jaws are in contact with each
other). For reading on zero error, we have to read it from vernier scale.
Zero Error
When using Micrometer Screw Gauge, we have to first check for zero error. This is to check whether
zero mark on thimble scale coincides with datum line on the main scale and reading on main
scale is 0 when we are not measuring anything (anvil is in contact with spindle). For reading on zero
error, we have to read it from thimble scale.