Signedunsigned
Inscribedhand-written in ink on the instrument: Andrew Nichols / Bowditch High School / Salem
FunctionThe triangle is used for drawing and verifying right angles.
Historical AttributesUsed by Andrew Nichols (1837-1921), civil engineer in Danvers, Massachusetts. He was a descendant of Edward Holyoke (President of Harvard, 1736-1769). This instrument was purchased along with other Holyoke family instruments by David P. Wheatland.
ProvenanceAndrew Nichols (1837-1921), Danvers, Massachusetts, a descendent of Edward Holyoke; passed down through the family to Andrew Nathan Nichols (1890- ), an engineer in Danvers, MA; purchased by David P. Wheatland.