Patent ID: 9687939
Date: 2017-06-27
CPC Classifications: B23K,C01B,C09K,G01B,H01L

Claim:
1. Apparatus for manufacturing a hydrogen 21 line precision measuring device, comprising: a hydrogen 21 line generator, which generates an emission spectrum comprising a spectral line at substantially 1420.40575177 MHz and communicates said spectral line to a frequency counter; said frequency counter, which is adapted to receive said spectral line, measures frequency of said spectral line generated by said hydrogen 21 line generator, and communicates an indication of said measured frequency to a computer; said computer, which receives said indicated frequency measured by said frequency counter, calculates wavelength of said indicated frequency and communicates control signals to a computer controlled scribing apparatus; said computer controlled scribing apparatus, which is adapted to receive said control signals, scribes markings on a measuring device substrate at one or more intervals of said calculated wavelength and subdivisions thereof, resulting in said hydrogen 21 line precision measuring device comprising said measuring device substrate having a plurality of scribed markings, each pair of said scribed markings at an interval of substantially said calculated wavelength and each of said subdivisions thereof equaling a portion of said calculated wavelength, wherein said measuring device substrate is of a platinum-iridium alloy of substantially ninety percent platinum and substantially ten percent iridium.