A Simple Device for Adding Optical Corrections to Periscopes
NAVAL SUBMARINE MEDICAL RESEARCH LAB GROTON CT
Pagination or Media Count:
A simple method of introducing optical corrections for periscope operators is described which neither compromises the integrity of the periscope nor impairs the ability of the operator to look through the periscope. This method makes it feasible to correct astigmatic operators as well as individuals with high spherical error.
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