a lower temperature and a con- a number of thermo-elements may alternate- sequent saving of coal. Another considera- Fig. 4. -APPAEATUS FOE EECOEDING THE TEMPEEATUEE OF THE ly be placed in circuit with the registering tion, particularly in iron and steel works, PEODUCTS OF COMBUSTION OF FIVE BLAST… … sistance to the electric current, becomes incandescent Fiff. 3. -HOTAIE CONDUIT OF A BLAST FUENACE piles can be thrown into circuit with the measuring when the current passes. This bridge is inserted in a WITH THEEMO-ELEMENT. and registering instrument. This is placed upon a capsule containing an…
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