Whatever the instrument source . . .
if the reading is convertible into a d-c signal
RECORDALL WILL CHART IT ! Direct reading scales, 11 current and potential ranges, Although industry uses a great number of special recording instruments to collect data, the average laboratory cannot wide variety of adapters and accessories . . . these are only afford such duplication. T o meet the need, the Fisher a few of the features that make the Fisher Recordall one of Recordall® was developed—the first universal laboratory the laboratory's most useful and flexible tools. recorder on the market. The Recordall will chart, as a FISHER function of time, any instrument reading that can be con verted into a d-c signal. It records potential, current, re sistance and temperature directly. Transducers are avail able to enable it to record pressure and vacuum, plot pH Write for the 12-page, illustrated book changes or draw a polarographic curve. let on the Fisher Recordall. 130 Fisher Building—Pittsburgh 19, Pa. B-IU
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FISHER SCIENTIFIC World's Largest Manufacturer-Distributor of Laboratory Appliances & Reagent Chemicals Boston · Chicago · Ft. Worth · Houston · New York · Odessa · Philadelphia · Pittsburgh · SL Louis · Washington · Montreal · Toronto Circle No. 26 on Readers' Service Card
34 A
INDUSTRIAL A N D ENGINEERING CHEMISTRY
Circle Nos. 50-1, 50-2, 50-3 on Readers' Service Card
