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Lot 170:
Description
This collection comprises several vintage technical measuring and testing instruments of British and American manufacture. Included is an Avometer Model 8 analogue multimeter by AVO, Automated Relays and Controls Ltd, featuring a black composite housing, mirrored scale, and dual rotary range selector switches. It is contained within a tan leather-bound Ever Ready carrying case with a shoulder strap, original instructional ephemera, and test leads. Also present is a Venture mechanical hand tachometer with a dial face graduated for multiple ranges including 2000 and 10,000 RPM, housed in an octagonal blue velvet-lined case with interchangeable drive tips and an extension rod. The lot includes a Brown and Sharpe external micrometer, engraved with the maker mark and Providence, R.I. U.S.A., featuring a frame with decimal equivalent tables. A second external micrometer is provided in a black soft-lined protective case with a brass identification plaque. Further items include a Distag QCS digital vernier caliper of stainless steel construction with a plastic LCD display unit in its original black plastic case, and two vintage slide rules, one being a Thornton PIC model in its original cardboard box.
Micrometer: 0 – 1 inch
Digital Caliper: 150 mm.
Condition report:
The instruments are visually well-preserved with typical signs of age-related wear and light surface oxidation to metal components. The leather Avometer case and cardboard slide rule box show scuffing and shelf wear. The mechanical and electronic functions of all instruments, including the multimeter, tachometer, and digital caliper, have not been tested. The digital caliper requires a battery.
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