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HULTAFORS folding rule

P1030290

Folding rule made of birch wood, made by Hultafors, Sweden.

The Hultafors founder, Karl Hilmer Johansson Kollén, invented the folding rule in 1883.

Detail: www.flickr.com/photos/100761653@N07/27779579100/in/photos...

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Uploaded on July 3, 2016
Taken on July 3, 2016