Description
Nice Staedtler #98800-18 adjustable dual parallel ruler i8 inches long. Vintage engineer, architect, and navigation collectible marking and measuring tools
Parallel rules help draftsmen, surveyors, cartographers, architects, and navigators draw accurate parallel lines. The instrument comes in two main forms: two rectangular straight edges connected by brass or silver hinges, or a single frame surrounding a roller.
The first type was known in Europe by 1600, while Englishman A. George Eckhardt is credited with inventing the second in 1771. The parallel rule was superseded for most uses by the T-square in the 19th century, but navigators continue to use parallel rules in conjunction with gridded charts.
Brand
Staedtler Mars GmbH
Staedtler Mars GmbH & Co. KG (German pronunciation: [ˈʃtɛtlɐ]) is a German multinational stationery manufacturing company based in Nuremberg. The firm was founded by J.S. Staedtler (1800–1872) in 1835 and produces a large variety of stationery products, such as writing implements (including technical drawing instruments),[1] art materials, and office supplies. Staedtler claims to be the largest European manufacturer of wood-cased pencils, overhead projector pens, mechanical pencils, leads, erasers, and modelling clays. Staedtler has over 26 global subsidiaries and nine manufacturing facilities. Almost two thirds of the production take place in the four production facilities in Nuremberg, Germany,[4] though some of its products are made in Japan. Its "Noris' line of pencils is extremely common in British schools. More info at
https://www.staedtler.com/ca/en/company/about-staedtler/history/
https://en.wikipedia.org/wiki/Staedtler
