Lacquered-Brass Solar Miscroscope by W & S Jones, London, with tapering brass tube, 2 1/2-inch condensing lens, projection lens with rack-and-pinion focusing and screw-thread to brass plate with shutter screws and mirror with tilting and rotating movements, in fitted mahogany case with label W & S Jones, No. 135 Holborn, London and four brass slides, wd. 11 1/2 in. Note: William and Samuel Jones are listed at 135 Holborn between 1792 - 1800.
Lacquered-Brass Solar Miscroscope by W & S Jones, London, with tapering brass tube, 2 1/2-inch condensing lens, projection lens with rack-and-pinion focusing and screw-thread to brass plate with shutter screws and mirror with tilting and rotating movements, in fitted mahogany case with label W & S Jones, No. 135 Holborn, London and four brass slides, wd. 11 1/2 in. Note: William and Samuel Jones are listed at 135 Holborn between 1792 - 1800.
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