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Cardboard construction plate system (1917)

Noll, John Lawrence, 1874- [from old catalog] · [Altoona, Pa., Printing department of the public schools] · leaf 17

An illustration from Cardboard construction plate system, 1917, leaf 17
Hith To drau square, base line si yen. To drau square about center c. Drau a as center drau a re d-e. from ddrau a re proceed as in rishi triangle, then lineab thru a kJith radius A the side of a- f.from s drau arc h. Drau Ime.d-s^h udh a-b as radius, has center drajj square.dracjc/rc/el^/itha-bas… … ffrau circle udh radiusaiven. tfienTnake f/ote. Construcioh/ecisot cardboard idrtf) a-b as rad/ua, a-h as centers drau arcstoffnd center c then SIX steps an circ/e and conrject u/tfi from a step around circ/e F/ste system ff^^025^y^^^of/ straisht tines, formins henason. -13—

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Internet Archive · The Library of Congress · Public domain (published before 1931). Free to use for anything.

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