Allen, Charles Ricketson, 1862- [from old catalog] · New York, H. Holt and company · leaf 252
moreexpensive and more convenientthan the first. The capacity ofboth forms is from 200 to 250 grm., and their sensitiveness isnearly alike. Substitute Balances.—Balances may be constructed with awooden beam of tough wood and a wooden post attached to asuitable base-board. The pans, of tin… … Fig. 120.
Physics
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