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Periscope with square mahogany body (17" long)

Small periscope

1897

Tank periscope

Periscope used in the trenches

Periscope no.4

1917

Binocular bifocal periscope

Periscope in brass no.130

Periscope, French, 1900-1925

Two-power artillery periscope by C. P. Goerz

1917

Periscope for use in trenches by R.& J. Beck Ltd.

Periscopic bubble aircraft sextant, Type 1A, No. 2053; Mount for periscopic bubble aircraft sextant; Mahogany carrying case, for periscopic bubble aircraft sextant; Steel carrying case, pyramidal shaped, for periscopic bubble aircraft sextant; Cardboard box, internally padded to fit lower half of steel carrying case; Cardboard box, internally padded to fit upper half of steel carrying case; Cardboard box – inscribed with: ‘Comet Sextant’ - to fit over lower and upper internally padded cardboard boxes: all objects by Kelvin and Hughes (Aviation) Limited, Barkingside, Essex, England, 1950-1951. The periscopic bubble aircraft sextant was used on the De-Havilland Comet passenger jet aircraft.

Periscopic aircraft sextant: Type 1A, No. 2053, with mount; mahogany case; steel case; cardboard box upper+lower; outside box

Cardboard folding periscope, closed to flat pack 15 x 17.5cm which opens to 45cm length with 32cm between mirror centres. Two hinged mirrors fall into place when opened. Designed for the 1937 Coronation. Patt.App.25973/1936. Instructions printed on the side. c.1936.

The Vimos periscope

1931-1941
Binocular bifocal periscope, type CK. 11 number 272, made by Barr and Stroud Ltd, comprising the following four parts

Binocular bifocal periscope

Stereoscopic periscope by Carl Zeiss, Jena, one prism loose, in leather case

Stereoscopic periscope by Carl Zeiss