I googled the patent number and found the following info. The figures on the patent sketches looks slightly different than the piece. Patent number: US 3497806
JAI CV-M30 CCD Camera w/ Computar EX1.5C Extender & B+W 25.5E Lens This is another fine Gizmo from SurplusGizmos located in Hillsboro Oregon. You may be interested in
Vintage LIQUID TEMPERATURE GAUGE-LARGE 5-Inch Industrial-From TRANSFORMER CO. ~Gauge case measures 5 inches in diameter and 2 inches deep. It is made of a thick, heavy-duty industrial metal.
MAINLAND VALVE & FITTING, INC. INDUSTRIAL WHOLESALE SUPPLY MAINLAND VALVE & FITTING IS A SURPLUS INDUSTRIAL WHOLESALE SUPPLY COMPANY. MOST MATERIAL OFFERED BY US WILL BE OF AN INDUSTRIAL GRADE.
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