Gear's illustrated catalogue of wood and iron working machinery (1872)
A.S. Gear, Gear, A. S · Boston : Printed at A.S. Gear's printing office, 62 Sudbury Street · leaf 58
ia(5l:\ii\e. … This Boring Machine is made entirely of iron, with two spindles, which can be adjusted towards and from eachother. When close together they are one inch from centre to centre, and they can be set apart to six inches. Acompound table, which slides in and out, and also up and down, serves to support…
