- Paul Weiss (1864-1943) was born in Switzerland, and moved to the United States in 1881. By 1891 he was working as an optician in Denver, Colorado. From 1904 to 1910 he worked in partnership with Frank Heitzler, whose patent (#891,733), dated June 23, 1908, described a telescope with two prisms in the optical train, making it substantially shorter than telescopes ordinarily used with surveying instruments. The telescope of this transit is of that type. The horizontal and vertical circles of this transit are silvered, graduated to 30 minutes of arc, and read by verniers to single minutes. There is a clamp and tangent to the telescope axis. The inscription on the telescope reads "Weiss & Heitzler Makers No. 32 Denver, Colo Patent June, 1908."
- Ref: Charles Smart, The Makers of Surveying Instruments in America Since 1700, vol. 2 (Troy, N.Y., 1967), pp. 207 and 257.
- Currently not on view
- Object Name
- engineer's transit
- date made
- Weiss and Heitzler
- place made
- United States: Colorado, Denver
- overall: 11 7/8 in; 30.1625 cm
- horizontal circle: 5 1/4 in; 13.335 cm
- needle: 3 1/2 in; 8.89 cm
- vertical circle: 5 in; 12.7 cm
- telescope: 8 in; 20.32 cm
- hanging level: 4 in; 10.16 cm
- overall in case: 15 1/4 in x 9 1/2 in x 7 1/2 in; 38.735 cm x 24.13 cm x 19.05 cm
- ID Number
- accession number
- catalog number
- Credit Line
- LaVerne Watkins
- Data Source
- National Museum of American History
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