File talk:Micrometer no zero error.gif

Image shows an incorrect method. No attempt at reading an estimated tenths is made. The proper reading here would be 4.140 not 4.14. The least digit is the so-called "least significant digit" and it is estimated from the smallest rulings on a device. For typical micrometers that estimated tenth is at the level of a thousandth of a millimeter (in other word at the micrometre level, hence the device's name). The animation effectively teaches people to throw away a full magnitude of precision. Jason Quinn (talk) 01:57, 2 April 2022 (UTC)