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A Differensbildungsgerat Codebreaking Tool, German, 1939-45,five cast metal cylinders with raised numbers, in metal framework, 11 1/2in (29cm) l...
A W. Watson & son microscope oil illuminant, English, early 20th century,complete with oil reservoir, wick, condenser and chimney, in fitted case,...
A Collins Brokett microscope bench lamp, English, circa 1900,complete with brass stand, glass reservoir and ceramic chimney in case, together with...
A microscope bench illuminant in case, English, circa 1900,the circular brass ring base with adjustable paraffin lamp with glass reservoir and ox...
A JOSEPH WHITWORTH AND CO BRASS AND STEEL BENCH MICROMETER, English, third quarter of the 19th ce...
A JOSEPH WHITWORTH AND CO BRASS AND STEEL BENCH MICROMETER, English, third quarter of the 19th century,signed Sir Joseph Whitworth and Co Limited ...
An Adams double-action air pump, English, early 19th century,signed Adams London, the brass and mahogany pump with double vacuum cylinders and ra...
A mahogany backstaff or Davis quadrant, English, mid 18th century,stamped JAMES STERLING, with boxwood 0-25 degree and 0-60 degree arcs, boxwood...
A brass spectroscope, probably English, late 19th centurywith collimator and telescope, on circular platform above tripod base, 12in (31.5cm) hi...
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