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    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 diff

    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 diff

    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 diff

Pembroke Daily Observer, February 15, 1970, p. 10     10 The Pembroke Observer Friday, February 13, 1970 Area Township Wants Wildlife Interpretive Centre MACKEY (Special) -- A resolution was passed at a recent council meeting of the Township of Head, Cl