The firm was founded in 1867 by William J D Keuffel and Hermann Esser to sell drawing materials and instruments. They brought out their first catalogue in 1868. The firm and its products grew steadily and they sold products made in their own factory and bought in from Europe. In the twentieth century they also became a leading supplier of optical instruments.
Keuffel & Esser Barch-Payzant (freehand) lettering pens set. The box is for the 3225 set that would normally contain pens 1 to 6 but is overstamped “SPECIAL” and actually contains pens 000, 00, 0, 2, 4, and 6. Some of the pens have patent dates on them (Pat Feb 1 21 Jun 1 26). Only the largest pen seems to have been used.
Sigsbee’s Patent Parallel Rule made by Keuffel & Esser with its original card box. The addresses on the label are those for about 1900 but the rule and box appear never to have been used. Inset rubber push pieces enable the rule to be held without slipping whilst the pivoting arrangement allows the arm being moved to be held clear of the paper or chart.