Optics: measuring and testing – Refraction testing – Prism engaging specimen
Patent
1974-11-06
1976-03-09
Rolinec, R. V.
Optics: measuring and testing
Refraction testing
Prism engaging specimen
33174G, 250568, G01B 1102
Patent
active
039428966
ABSTRACT:
A measuring device to determine whether the width of a printed bar falls within prescribed tolerances has a sleeve with a magnifying lens at one end and a reticle at the other end. The reticle is inscribed with indicia for providing an immediate visual indication of the magnitude of width of the bar.
REFERENCES:
patent: 3546778 (1970-12-01), Lepkowski
Schneider David
Soares Lewis
Hostetter Darwin R.
Rolinec R. V.
Sweetheart Plastics, Inc.
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