比較測長器に対する温度変化の影響について(第三報)
1954 年 20 巻 230 号 p. 175-179
詳細
1954 年 20 巻 230 号 p. 175-179
The writer investigated the effects of temperature change on comparators and obtained an apporoximate error formula as described in the paper I and II.
Further investigations are performed in a controlled temperature box provided with a thermostat to reveal the limitations of our error formula and the difference of temperature between the surface of the principal parts of comparator and the ambient air.
According to these results, the formula can be practically applied to many conventional works except very long ones (100mm, or more) having a higher expansion coefficient in rapid temperature change of ambient air, and also considerable temperature difference shows the impossibility of correcting by means of the mere ambient temperature.
