William J. Young & Sons Transit

<< >>
Wm. J. Young & Sons (fl. 1870-1881) used a simple transit instrument of this sort as their logo, placing it on their advertisements and on the front cover of their Manual and Price List of Engineering and Mathematical Instruments. The serial number indicates that this example dates from 1872. The horizontal circle is silvered, graduated into 30 minutes of arc, and read by opposite verniers. One vernier reads to single minutes, and the other reads to 1/100 of a degree. The signature reads "Wm. J. Young & Sons 4648 Philadelphia."
Currently not on view
date made
William J. Young and Sons
place made
United States: Pennsylvania, Philadelphia
overall: 11 in; 27.94 cm
horizontal circle: 6 1/2 in; 16.51 cm
needle: 5 in; 12.7 cm
telescope: 11 1/4 in; 28.575 cm
aperture: 1 7/8 in; 4.7625 cm
overall in case: 13 1/4 in x 9 1/4 in x 12 7/8 in; 33.655 cm x 23.495 cm x 32.7025 cm
ID Number
accession number
catalog number
Credit Line
Leigh E. Herman
See more items in
Medicine and Science: Physical Sciences
Measuring & Mapping
Surveying and Geodesy
Data Source
National Museum of American History


Add a comment about this object