


Tank periscope

Periscope used in the trenches

Small periscope
1897

Periscope no.4
1917

Binocular bifocal periscope

Two-power artillery periscope by C. P. Goerz
1917

Periscope in brass no.130

Periscope, French, 1900-1925

Periscope for use in trenches by R.& J. Beck Ltd.
Periscopic aircraft sextant: Type 1A, No. 2053, with mount; mahogany case; steel case; cardboard box upper+lower; outside box
The Vimos periscope
1931-1941