Constructive drawing. A text-book for home instruction, high schools, manual training schools, technical schools and universities (1904)
Hanstein, Herman. [from old catalog] · Chicago, New York [etc.] Keuffel & Esser co. · leaf 77
be built by the student or teacher in the same timeit will take to make a blackboard sketch. The models are two feet high, easily visible by every pupil of a largeclass-room, and with the application of the Goniostat may be placedin any position in space and rotated in horizontal circles, in… … HansteinsBlackboard Compasses Warrantednot to slipon anyBlackboardSurface X. Manufactured and for sale by The Keuffel & Esser Co- New York Chicago St, Louis San Francisco PRINTERS, CHICAGO SEP S 1904
Mechanical drawing
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