Douglas Henry Nelles
Title
Douglas Henry Nelles
D.H. Nelles
Type
Individual
Coverage
Canada
Active From
1913-01-01
Active Until
1930-01-01
Location
Ottawa, ON
British Columbia
Product Areas
Surveying
Photogrammetry
Activities
Designing
Practicing
Timeline
- 1881, March – Born in Grimsby, ON. (Find a Grave)
- 1913 – Authors “Precise Levels”, an article laying out the precise levels in location s in British Columbia. (“Precise Levels”)
- 1915 – “Designed a simple device for plotting topography from photos used in Geodetic Survey of Canada” ; “ex plotting device… in SML” (Trudel)
- 1916 – Signed up for Canadian Overseas Expeditionary Force, giving profession as “Civil Engineer & Dominion Land Surveyor”. (“Nelles, Douglas Henry”)
- 1930 – Patents a photogrammetrical method of making topographical maps from photoraphs taken by “a hydroplane, aeroplane or airship.” (“Method of making topographical maps”)
- 1960, Dec. – Dies. (Find a Grave)
- 1913 – Authors “Precise Levels”, an article laying out the precise levels in location s in British Columbia. (“Precise Levels”)
- 1915 – “Designed a simple device for plotting topography from photos used in Geodetic Survey of Canada” ; “ex plotting device… in SML” (Trudel)
- 1916 – Signed up for Canadian Overseas Expeditionary Force, giving profession as “Civil Engineer & Dominion Land Surveyor”. (“Nelles, Douglas Henry”)
- 1930 – Patents a photogrammetrical method of making topographical maps from photoraphs taken by “a hydroplane, aeroplane or airship.” (“Method of making topographical maps”)
- 1960, Dec. – Dies. (Find a Grave)
Sources
“Maj. Douglas Henry Nelles” Find a Grave (https://www.findagrave.com/memorial/67696544/douglas_henry-nelles) [13-08-24]
“Nelles, Douglas Henry” Library and Archives Canada Ref. RG 150, Accession 1992-93/166, Box 7260 - 53 (https://recherche-collection-search.bac-lac.gc.ca/fra/accueil/notice?app=fonandcol&IdNumber=3634460) [13-08-24]
Nelles, Douglas H. “Precise Levels” Publications of the Dominion Observatory, Ottawa. 1 No. 2 (Government Printing Bureau, 1913) (https://www.canadiana.ca/view/oocihm.9_90295/4)
Nelles, Douglas H., Fortin, Joseph O. “Method of making topographical maps” US Patent US1937711A (https://patents.google.com/patent/US1937711A/en)
“Nelles, Douglas Henry” Library and Archives Canada Ref. RG 150, Accession 1992-93/166, Box 7260 - 53 (https://recherche-collection-search.bac-lac.gc.ca/fra/accueil/notice?app=fonandcol&IdNumber=3634460) [13-08-24]
Nelles, Douglas H. “Precise Levels” Publications of the Dominion Observatory, Ottawa. 1 No. 2 (Government Printing Bureau, 1913) (https://www.canadiana.ca/view/oocihm.9_90295/4)
Nelles, Douglas H., Fortin, Joseph O. “Method of making topographical maps” US Patent US1937711A (https://patents.google.com/patent/US1937711A/en)
Citation
“Douglas Henry Nelles,” Precision Instrument Culture in Canada, accessed October 16, 2024, http://omeka.uottawa.ca/instrument-precision/items/show/2409.