Electrochemical and metallurgical industry . Knott Apparatus Company, Boston, Mass. It was designedwith a view of obtaining the highest degree of precision ofwhich the plug form of Wheatstone bridge is capable. Theaccuracy of a resistance in practical use depends upon anumber of conditions of which the mere accuracy of adjust-ment is but one. In the University of Texas Resistance Box,the object was to provide permanency of calibration in everydetail. !he coils of this box are:Rheostat arm, I 10 100 1000 ohm 2 20 200 2000 3 30 300 3000 4 40 400 4000 Ratio arms. 10 100 [ 000 10 100 1000 Tot
Electrochemical and metallurgical industry . Knott Apparatus Company, Boston, Mass. It was designedwith a view of obtaining the highest degree of precision ofwhich the plug form of Wheatstone bridge is capable. Theaccuracy of a resistance in practical use depends upon anumber of conditions of which the mere accuracy of adjust-ment is but one. In the University of Texas Resistance Box,the object was to provide permanency of calibration in everydetail. !he coils of this box are:Rheostat arm, I 10 100 1000 ohm 2 20 200 2000 3 30 300 3000 4 40 400 4000 Ratio arms. 10 100 [ 000 10 100 1000 Total FIG. 3.—PNEUM.\TJCPYROMETER. Wheatstone Bridge Resistance Box. The most compart and the most easily portable form ofWheatstone bridge is undoubtedly the plug contact form in.
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Keywords: ., bookcentury1900, bookdecade1900, booksubje, booksubjectmetallurgy
