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Letter from F. Wagner Schlesinger, Director of the Adler Planetarium to R.G. Olt, Optron Laboratory

ZPC.S3.F1.7

In response to Olt's inquiry in a letter from October 19, 1945, Schlesinger describes the lamp used for the Zeiss' optical pointer and its specifications. An actual lamp in a Bakelite base was also sent to Olt as were technical details and instructions. The letter asks that the lamp and base not be adjusted in any way.

One page, 8.5 x 11 inches

R.G. Olt, F. Wagner Schlesigner

textual record

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