Catalogue : mathematical and engineering instruments and materials manufactured and imported by James W. Queen & Co. (1880)
James W. Queen & Company · James W. Queen & Co. · leaf 186
*» 30 0025 00 40 0046 00 JAMES W. QUEEN & CO., PHILADELPHIA. , 184 TIME CLEVELAND.... Case Ave Wilson Ave Glenville .. Colts C0LLINW00D-. Kv.cliil » Northwood *f irKiin -•.•••**•...... Willoughby- 118.0 Revnolda.^ Mentor, h£lSLEY … 1185. The above cut represents, Fig. 1, the Speed Protra.tor, as set at a speed angloof 25 miles per hour, and part of a Chart Fii,. 2 represents the lower head, C, withthe speed scale, G, engraved on it. Kg. 3 is :i cross Bectit« of the lower head, C, liieupper and movable head, B, and part of the…
