On the issue of calculating basis measurement errors using the improved Iederin device

Abstract

The article highlights the most important constant error, and indicates the importance of this highlighting for a correct judgment about the accuracy of basis measurement with the Iederin device. The main constant error is the error in a given length of wire. Other errors: from incorrect consideration of temperature, tilt, and deviation of the wire from the basis axis are insignificant. The available material shows: 1) a decrease in the relative error with increasing basal length for one wire; 2) good agreement between the results from measurements back and forth with one wire, which gives reason not to look for any other systematic error other than errors in the standardization of wires. The absence of systematic errors in the measurement process itself is the main advantage of the method of measuring with Invar wires of considerable length.