Prismatic monocular No.4308 by the Precision Optic

Made:
1917 in London

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Prismatic monocular No.4308 by the Precision Optical Co Ltd, London, magnification 6X objective 28mm diameter, also marked 'NPL 17', with leather strap, in leather case, probable date 1917

Details

Category:
Optics
Object Number:
1996-145
Materials:
brass (copper, zinc alloy), glass, leather and plastic (unidentified)
credit:
Cooper, R.M.