Technical supply co., Scranton. [from old catalog] · Scranton, Pa., Technical supply co · leaf 180
56. Boxwood Plotting Scale, 6 inches each, $ .15 1758. Ivory Plotting Scale, 6 inches each, .90 PAPER SCALES Printed on Bristol Board 1760. Cardboard Scale, 18 inches long, full divided i, i, f, i, 1, li,3 inches to the foot. Per set of eight scales $1.50 Single scale 25 1762. Cardboard Scale, 18… … 1770 1770. Triangular Scale Guard, nickel plated each, $ .20 If Special Scales are desired, send sketch showing divisions and num-bering, and figure cost at double the list price of similar regular Scales. 173 ^
Engineering instruments · Drawing instruments
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