A rare early 18th-Century brass and ivory screw-barrel microscope,

Details
A rare early 18th-Century brass and ivory screw-barrel microscope,
signed Culpeper Fecit on the body tube, the screw-barrel with sprung slide holder, objective mounting and ivory upper body tube with additional draw-tube and eyepiece (upper body-tube body replacement), mounted on a ball and socket joint on the pillar, with sliding attachment, with iron clamp screws holding the 'musschenbroek-nut', articulated jointed arm with swivel plano mirror, the lower pillar baluster-turned and mounted on the folding stand, the three arms with floral decoration, one signed Culpeper, another Fecit, with additional objective, replacement ivory handle and two sliders, in plush-lined mahogany case -- 8½in. (21.6cm.) wide

See Colour Plate and detail
Literature
C.f. Gerard L'E. Turner, Collecting Microscopes, pp 30,31
LIBRAIRIE ALAIN BRIEUX, COLLECTION NACHET, pp 25 (35 for a similar example by Scarlet)

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