50 •>7 .90 28 .90 Frost & Adams Co., 37 Cornhill, Boston, Copenhagen Ship Curves of Hard Rubber. Set of 120 Curves, ill a walnut case, ^65.00 Separate Curves, each, from 30 to 1.50 The above of Wood or Celhilokl, if desired. Hard Rubber Logarithmic Spiral Curve. Hard Rubber Logarithmic… … 654. No. 054. Fentegraph, 20 inches long, of Hardwood, No. 1. Heavily mounted with nickel plated elbow joint wheel, pencil holder and exchangeable point; finely polished, black figures, in neat box, . . ^2.50 No. 2 Brass mounted, with brass elbow joint wheel, pencil holder and moveable point;…
