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Scientific American, Vol. 94, No. 20 (May 19, 1906) (1906)

leaf 6

An illustration from Scientific American, Vol. 94, No. 20 (May 19, 1906), 1906, leaf 6
retain shape when When desirable the couples are made with a sep- To permit the ‘use of the treadle, the screw is reset, squeezed in the hand. The quantity of water required and the routing tool having been brought into position will vary with the condition of the sand and percentage so as merely… … of 2 parts by measure of plaster of Paris and 10 to LEADS TO INDICATING INSTRUMENT ter, have become quite common in some places in THERMO-ELECTRIC PYROMETER, COMPENSATOR, AND 12 of water; and is subjected for considerable time Florida. They are called veneer cores, and are the to heavy hydraulic…

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