A lacquered brass adjustable micro-spectrograph signed W.Watson & Sons London with side mounted mirror reflector, rack-and-pinion adjustment in fitted mahogany case -*¾in.(22.5cm)wide; another lacquered brass spectroscopic attachment in fitted case signed G. & S. Merz in Munchen , with accessories; Norberts Test plate in red leather case; Webbs Lords Prayer microphotograph
A lacquered brass adjustable micro-spectrograph signed W.Watson & Sons London with side mounted mirror reflector, rack-and-pinion adjustment in fitted mahogany case -*¾in.(22.5cm)wide; another lacquered brass spectroscopic attachment in fitted case signed G. & S. Merz in Munchen , with accessories; Norberts Test plate in red leather case; Webbs Lords Prayer microphotograph
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