No. 246. The cut shows back of Board, and crossbars by which panel (over which the paperis stretched^ is held in position. 4to Imperial, II X 16 inches . ^1.50 1 Imperial, 22 x 30 inches . . $2.25 Half 16 X 22 . 1.75 I The above boards are made of thoroughly seasoned stock; frames of hard wood,and… … A. Suitable for Schonl-rooms, Shops, etc., plain ash top, 22 x 24 inches,without Instrument Shelf and DrawersE. Same as A, with Instrument Shelf, 7 x 24 inches . . - . C. Black Walnut Top, 22 x 26 inches, otherwise like B - - - - D. Suitable for Counting-rooms, Architects offices, etc., black…
Artists' materials · Mathematical instruments
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