| 摘要 |
466,263. Range finders. ZEISS, C., [Firm of]. Jan. 18, 1937, No. 1437. Convention date, Feb. 5, 1936. [Class 97 (i)] In a mark plate for a stereoscopic rangefinder, having a number of marks arranged on a zigzag line, the distance between two consecutive marks is approximately the same throughout the zigzag line, and the angles between the single lines of the zigzag are equal. The division points consist as shown, partly of rhombic marks and partly of numerals.
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