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US Patent: 989,857
Twist-Drill Gage Drill Point Gage
Patentee: George Mack (exact or similar names) - Elliston, MT USPTO Classifications: 33/201 Tool Categories: gauges woodworking tools : hand drills : drill accessories Assignees: None Manufacturer: Not known to have been produced Witnesses: H. P. Parmalee Augustus Boolion Charles W. Helmick Edward C. Russel	Patent Dates: Applied: Feb. 25, 1910 Granted: Apr. 18, 1911 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Steve Reynolds
Description: A simple, inexpensive drill point gage constructed from a sheet of steel having the conventional oblique arm with graduations.

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