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- Description:
- One drawing entitled "Survey of Northern and Northwestern Lakes, Design of Intersection Protractor." Notes beneath the title indicate that the protractor was "Made under the direction of Major W. L. Fisk, Corps of Engineers, U.S.A., and E. E. Haskell, Prin. Asst. Engineer, by Murray Blanchard, Junior Engineer." The plan is drawn in black ink on linen and is dated April, 1904. The drawing was prepared at full scale and shows plan, profile, and cross-section views for the design of a protractor which was used for drawing lake survey charts. Additional notes at the bottom of the title block give the following specifications: "Make bar of steel, graduated arcs of German silver, and other parts of brass. Protractor arms to be nickel plated. Graduate protractors to 1/2 degree and verniers to 1 minute."
- Date Issued:
- 1904-01-01T00:00:00Z
- Data Provider:
- Detroit Historical Society
- Collection:
- Maritime
- Description:
- One drawing entitled "Survey of Northern and Northwestern Lakes, Design of Intersection Protractor." Notes beneath the title indicate that the protractor was "Made under the direction of Major W. L. Fisk, Corps of Engineers, U.S.A., and E. E. Haskell, Prin. Asst. Engineer, by Murray Blanchard, Junior Engineer." The plan is drawn in red and black ink on linen and is dated April, 1904. The drawing was prepared at full scale and shows plan, profile, and cross-section views for the design of a protractor which was used for drawing lake survey charts. Additional notes at the bottom of the title block give the following specifications: "Make bar of steel, graduated arcs of German silver, and other parts of brass. Protractor arms are nickel plated. Graduate protractors to 1/2 degree and verniers to 1 minute."
- Date Issued:
- 1904-01-01T00:00:00Z
- Data Provider:
- Detroit Historical Society
- Collection:
- Maritime
- Description:
- One navigational chart entitled, "Manitou Passage, Lake Michigan." The chart was "Prepared from U. S. Surveys and first issued under the direction of Major W. L. Fisk, Corps of Engineers, U. S. Army, in 1902." It was later revised and "published under the direction of Lieut. Colonel Mason M. Patrick, Corps of Engineers, U. S. Army, in 1915." The chart was drawn at a scale of 1:30,000 and covers about 20 miles of the Manitou Passage just north of Glen Arbor, Michigan. The chart includes information such as soundings in feet, lake bottom characteristics, shoreline details, lighthouses, lines of latitude and longitude, and sailing directions. The chart was printed in black ink on white paper and was published by the U. S. Lake Survey Office. Land areas are colored pale yellow and shallow areas of the lake are colored light blue. The chart was "Issued January 12, 1916" with "Aids to navigation corrected from information received to April 16, 1920."
- Date Issued:
- 1920-01-01T00:00:00Z
- Data Provider:
- Detroit Historical Society
- Collection:
- Maritime
