A way to achieve parallelism between the axis of the hinge of the double articulated visual pipe and the optical axes of its hal...

A way to achieve parallelism between the axis of the hinge of the double articulated visual pipe and the optical axes of its halves: No. 18419. Declared.09/18/1907.Issues on 01/31/1911 / "Karl Zeiss".- [B.M .: B. and., 1911].-265-267 p., 1 l.Il .. -Description of the method of achieving parallelism between the axis of the hinge of the double articulated visual pipe and the optical axes of its halves.To the privilege of a foreign company "Carl Zeiss" (Carl Zeiss), in the city of Jena, in Germany, declared on September 18, 1907 (og. St. No. 33533).Group V. No. 18419. January 31, 1911.I. Zeiss Karl, company.Yena 1.People (collection).Electronic copy source: PBOriginal storage location: VPTB FIPS