Accessibility: Skip to content


Results

We found 2 matching items.
Media Types Texts   Geographic Location Head  
list thumb list 2 columns gallery
  • Map of Head Township
    Map of Head Township
    imagetextcollection  Unknown     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 ...
    imagetextcollection  Unknown   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
  • Head Township ca.1859
    Head Township ca.1859
    imagetextcollection  July 1859     Crown Lands Department Toronto. Signed: A. Russell, Assistant Commissioner.
    imagetextcollection  July 1859   Crown Lands Department Toronto. Signed: A. Russell, Assistant Commissioner.
    Head, Clara and Maria Public Library
Web Tools
See Alternate Formats:
Dublin Core | RSS | Atom | Solr | Mods | RDF
Share
Search within these results
Contributors
Media Types
Location
Groups
Item Types
Years
18501850185118521853185418551856185718581859
18601860186118621863186418651866186718681869
18701870187118721873187418751876187718781879
Creative Commons