The McKercher Wrench and Tool Company incorporates in Jackson, Michigan in 1902 with Robert Lake president and George McKercher superintendent
Patents 504,232 August 29, 1893 – 729,504 May 26, 1903 – 771,169 January 11, 1904 – 797,595 January 3, 1905.
The removable jaw wrench was made in 6, 10, 14, 18, 24, and 36 inch sizes with the 36 having a pipe handle.
