Chart
Object number2011.101.13
Manufacturer
Winter Brothers
Manufacturer
Lear Siegler, Inc.
Retailer
Penn General Supply Company
OriginRochester, MI
Mediumplastic
Credit LineGift of Patricia Campbell
DescriptionWhite plastic chart card with black and blue text. One side has numerical chart of decimal equivalents. Other side has two numerical charts of drill sizes.Dimensions3 x 6 in. (7.6 x 15.2 cm)InscriptionsFront has numerical chart entitled, "DECIMAL EQUIVALENTS".
Back has two numerical charts entitled: "TAP DRILL SIZES" & "PIPE TAP DRILL SIZES".
MarksMaker's information printed on front, top "NATIONAL TWIST DRILL & TOOL DIV. / WINTER BROTHERS / Rochester, Michigan 48063"; top left corner: "LSI / LEAR SIEGLER, INC."
Printed on back, top: "PENN GENERAL SUPPLY COMPANY / 109-111 WOOD STREET / PITTSBURGH, PENNSYLVANIA 15222 / Telephone: (412) 471-2770".
Maker's information also printed on back at bottom "NATIONAL TWIST DRILL & TOOL DIV. / WINTER BROTHERS / Rochester, Michigan 48063 / DISTRIBUTERS IN ALL MAJOR CITIES"; bottom left corner: "LSI / LEAR SIEGLER, INC."; bottom right corner: "SOLD BY / INDUSTRIAL / DISTRIBUTORS".
Historical NotesDonor Patricia Campbell's husband, Clyde H. Campbell, worked for NAVCO (National Valve and Manufacturing Company) from 1967 to 1985. NAVCO was a pipe and valve manufacturing firm started by Henry E. Haller. They had two local plants in Etna and Lawrenceville. Radiographers would test the welds on the pipes to make sure they were sound. Campbell served four years in the U.S. Navy before apprenticing at NAVCO at the age of 23. The plant closed in 1985, during the recession, which decimated much of the industrial sector in the region. Campbell then worked as a radiographer at a Beaver nuclear power plant. His family attributes his death from leukemia to radiation exposure, but said that they can not prove this.
Related institution
National Valve and Manufacturing Company
Previous owner
Clyde H. Campbell
Related institution
United States Navy
On View
Not on view
1918-1988
