A vintage Leroy lettering set produced by the famous Keuffel & Esser Company. These lettering sets were used extensively during the 1960s to produce India ink lettering on drawings for scientific publications. The set is housed in a wooden box 40 cm in length by 10 cm in width by 4 cm in height. It contains nine engraved templates each with a different set of letters and numerals, a pen and a set of pen nibs. The user has a choice of symbol heights (in thousands of an inch) from 60 to 500. Ten different pen widths are also available. A chart on the box lists the recommended pen width for each letter size. Drawing instructions are located on the inside of the wooden case. This set was used by Bill McAlpine, a draftsman in the neutron scattering group at Chalk River.
