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Date: |
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Description: | Telescope Observation Special MkI
C Baker
1917
No 80
For use with 13pdr guns in AA role
sight
The telescope has a magnification of 3 diameters and a field of view of 12 degrees.
The object glass consists of a double convex and a plano concave lens. The rayshade is fitted to the object glass end.
The prism is fitted to the body.
The diaphragm is fitted with graticules, they consist of 2 horozontal and 4 vertical lines, equally spaced, 2 degrees apart.
The moderator lens fits over the eyepiece, it is for lessening the effects of the glare of the sun.
The telescope is provided with a lamp socket to take the electric lamp, which is used for illuminating the diaphragm for night work.
The telescope was used with the QF 13pdr AA equipment. | Publisher: | http://www.iwm.org.uk | Source: | Imperial War Museum | Creator: | C Baker | Identifier: | http://www.iwm.org.uk/collections/item/o... | Go to resource |
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