US Patent Office Model for an Improvement in Pantographs by Lucien F Bruce and Newlan J Wolcott. Lucien F. Bruce and Newlan J. Wolcott received Patent 118,902 for this “Improvement in Pantographs.” This is their patent model. It consists of eight metal bars, two cm. long and six 11 cm. long.

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Size: 1913px × 1307px
Photo credit: © SBS Eclectic Images / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: mathematics, medicine, science