What is the effect the precision of the bimetallic thermometer?

Bimetallic thermometer working principle is to round shape into threaded heat bimetallic strip as thermal devices, and put it in a protective sleeve tube, one end is fixed, known as the fixed end, the other end of the connection on a thin shaft, called the free end. Spool at the free end is equipped with a pointer. When the temperature changes, the resulting thermal devices the free end of the rotation, drive the thin axis from the Angle of the pointer changes, corresponding temperature indicator on the dial. We are ordering bimetallic thermometer is often talked about accuracy of 1. 0 or 1. 5, so the precision of the bimetallic thermometer has what effect? In fact, the precision of the bimetallic thermometer is used to calculate the maximum absolute error of a parameter, played a key role for measuring precision. His maximum absolute error = | maximum permissible error range | | = | precision X, for example, the bimetallic thermometer measurement range of 0 ~ 300 ℃ accuracy of 1. Level 5, margin of error for 300 x1. = + / - 5% 4. The maximum absolute error is 5 c, 4. 5C