William D. Spencer
Tools Made: Machinist's tools.
Working Dates: C1888.
He was issued patent #379,423 Mar. 13, 1888 for a depth gauge. It was not assigned to any company. It was witnessed by Elihu W.N. Starr of the Starr Mfg. Co.
The gauge has two scales. Marked PAT APL'D FOR.
References: 3, 24 Back Home
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