Results
We found 2 matching items.
Media Types: Images- Item types: Maps
- Year: 1885
Page 1 of 1
- Clara Township Map ca.1885
Early surveyors, like William E. Logan, used Rochon micrometer telescopes and targets (disk on a calibrated pole) to measure distance. Each microscope had a different calibration and therefore a different range. The instruments were calibrated against a distance measured with a surveyors chain (also known as Gunter’s chain). One chain … Early surveyors, like William E. Logan, used Rochon micrometer telescopes and targets (disk on a calibrated pole) to measure distance. Each microscope had a different calibration and therefore a different …Head, Clara and Maria Public Library - Plan of Grimsby Park, 1885
Title: Grimsby Park. New Survey. 1885. Parts of Lots 3 and 4 in the Broken Front and First Concession of Grimsby. Middle left: Proprietors certificate -- The lots coloured red and the Avenues and Streets coloured brown as shown hereon are laid out according to instructions. (signed) Noah Phelps President … Title: Grimsby Park. New Survey. 1885. Parts of Lots 3 and 4 in the Broken Front and First Concession of Grimsby. Middle left: Proprietors certificate -- The lots coloured red …Grimsby Chautauqua
Page 1 of 1
