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A mid 20th Century Amsler's Planimeter, with engraved signature, in original fitted box with
A mid 20th Century Amsler's Planimeter, with engraved signature, in original fitted box with instructions, number 56114, 31cm wide
A Negretti & Zambra London Zero-Setting rain gauge, late 19th/early 20th Century with green weathered copper square case, removable hopper to the ...
A brass monocular microscope by R & J Beck London, the cast triangular base with hinged strut
A brass monocular microscope by R & J Beck London, the cast triangular base with hinged strut support to adjust the angle with double wheel focusi...
A 19th Century ebony and brass vernier octant, the A-shaped frame inset with an ivory scale and
A 19th Century ebony and brass vernier octant, the A-shaped frame inset with an ivory scale and mounted with a brass framed mirror and filters and...
A World War II period Husun sextant by Henry Hughes & Son Limited, with crackled black lacquer
A World War II period Husun sextant by Henry Hughes & Son Limited, with crackled black lacquer frame, 15cm radius illuminated vernier scale, mount...
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