Binocular trench periscope
VAT rate of 17.5% is payable on hammer price plus … 顯示更多 Nippon Kogaku Equipment and Advertising Material
Binocular trench periscope

細節
Binocular trench periscope
8 x 6°; black-enamelled body, laterally-adjustable lenses, individually adjustable viewing lenses, the base lens section marked in Japanese script and English 2096, NO. 2130 JES [SCREW] [PATENT] 81266 [NIPPON KOGAKU] NIKKO, with matching mini tripod, in maker's fitted canvas case
出版
https://grad.usask.ca/gateway/archive17.html
注意事項
VAT rate of 17.5% is payable on hammer price plus buyer's premium.

拍品專文

Condition: 3(ii)
Cosmetic: Light signs of wear.
Lenses: Clean and clear, minor handling marks.

The Japanese script on the case reads: 92 [1932] Type Square Style Binoculars.

An extensive review of the Japanese optical industry and Nippon Kogaku is given in the reference cited. Nippon Kogaku began making periscopes in 1918. Production continued after the war when Nikon manufactured similar instruments for construction surveying.