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Sliding Induction Coil based on Design by Du ...
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X-Ray Tube by Leybold, c. 1929...
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Wild T2 Theodolite, c. 1930...
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Irish Circumferentor by Walker & Son, c. 1805...
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7 Wood Boxes for Surveying Instruments, c. 18...
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3 Surveyor's Crosses, 1820-40...
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3 Leveling Instruments...
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Theodolite by Pistor & Martins, c. 1865...
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5 Surveying Instruments...
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French Graphometer by Gondelar, Paris, c. 178...
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La Filotecnica Precision Theodolite, 1915...
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3 Leveling Instruments...
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Schmidt & Haensch Polarimeter, c. 1885...
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7 Spotting Scopes or Monocular Telescopes...
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Admiral Togo-Glas by Carl Zeiss Jena "Marine-...
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Monocular Opera Glass, c. 1880...
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Chevallier Spy Glass and 2 further Opera Glas...
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2 Brass Spy Glasses...
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4 Monocular Opera Glasses...
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4 Monocular Opera Glasses...
