Ruler

Object number2007.16.1
Date1970-1990
MediumWaxy cardboard; Metal
Credit LineGift of Sarah Heppenstall
DescriptionRuler/calculator. Rectangular pieces of waxy white cardboard. Red, blue, silver printed labels. Six small gold metal loops across the inside edges, connecting two pieces tightly together; a separate piece slides in and out to help with calculations. Once side reveals Multiplication and Division scales and the other is a weight measuring calculator.Dimensions2.875 x 12 in. (7.3 x 30.5 cm)
Marks"HEPPENSTALL COMPANY MIDVALE-HEPPENSTALL COMPANY / Plants: Pittsburgh, Philadelphia, East Brady, Pa. Warehouses: Los Angeles, Chicago, Pittsburgh".
Historical NotesHeppenstall Company, a steel manufacturer, was located in Lawrenceville, Pennsylvania. It began in 1885 as Tretheway Company; in 1890, it was incorporated in Pennsylvania. The name changed to Pittsburgh Shear Knife & Machine Company in 1896, and again in 1904 to Heppenstall Forge & Knife Company with changes in leadership. When C.W. Heppenstall became president in 1923, he changed the name finally to Heppenstall Company in 1930.
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