A way to achieve parallelism between the axis of the hinges and the optical axes of the tubes of prospecting binoculars with art...

A way to achieve parallelism between the axis of the hinges and the optical axes of the trumpet binoculars with articulated joints: No. 18417. Declared.08/20/1907.Issues on 01/31/1910 / "Karl Zeiss".- [B.M .: B. and., 1911].-259-260 s .. -Description of the method of achieving parallelism between the axis of the hinges and the optical axes of the pipe of the prospecting binoculars with articulated joints.To the privilege of a foreign company "Carl Zeiss" (Carl Zeiss), in the city of Yena, in Germany, declared on August 20, 1907 (og. St. No. 33301).Group V. No. 18417. January 31, 1911.I. Zeiss Karl, company.Yena 1.People (collection).Electronic copy source: PBOriginal storage location: VPTB FIPS