Technical supply co., Scranton. [from old catalog] · Scranton, Pa., Technical supply co · leaf 96
f^ ^^COLLEGIATE BRAND Selected German Silver Instruments, Steel Points … 820 821 822 824 826 820. Hatching Pen, with pushing screw, 5 inches, with three pens to handle each, $2.50 820C. Same as 820, in case each, 3.00 821. Ruling Pen, wedge regulated at upper end of handle each, 2.00 822. Curve Pen, 4| inches, blades fastened to a rod in a hollow handle, with setscrew…
Engineering instruments · Drawing instruments
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