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- Année: 1859
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- Head Township ca.1859
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 - Fraternal Societies in Canada
A virtual exhibit to portray the increasing popularity of service clubs such as the Kiwanis and the Rotary Club and recreational facilities since the mid twentieth century has coincided with a decline in the overall popularity of fraternal societies. Fraternal societies draw members at a slower rate than in previous … A virtual exhibit to portray the increasing popularity of service clubs such as the Kiwanis and the Rotary Club and recreational facilities since the mid twentieth century has coincided with …Toronto Public Library
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