Eyepiece ruler and table ruler error how much

Eyepiece micrometer, is fitted in the microscope eyepiece engraved with the scale contrast line of the glass plate, after calibration is used to measure the size of the object being observed. The error precision is high.

Taiwanese ruler is a unit of length. It is the measure used in Taiwan. Locally in Taiwan, the Taiwan system unit is still commonly used in Taiwan's traditional market today. The error is large.