WHY DRAW WHAT YOU CAN RECORD?

WHV DRAW WHAT YOU CAM RECORD? Vy Ε don't know that anyone has ever counted the

hours scientists spend drawing curves, but in a busy laboratory it runs w^ll into the thousands every year. The time that 's spent plotting instrument readings can be used for more profitable work if you let Fisher RECORDALL draw the curves for you.

R E A D R E C O R D C O N T R O L

The RECORDALL is the first truly universal laboratory recorder. I t will record any instrument reading that can be converted into the proper electrical signal. BuiLt-in circuits and special adap­ters make it three instruments in one:

A DIRECT-READING INDICATOR with clip-on scales for every function and range . . . A VARIABLE-SPEED RECORDER which uses standard strip charts . . . A CONTROLLER which turns external cir­cuits on and off when the recorded signal is above or below a pre-set control point. You don't have to buy expensive recording models of your

instruments, with limited ranges, when you can use the RECORDALL· with your present equipment.

T O B E M O R E S P E C I F I C . . ,

The RECORDALL records the following vari­ables directly or with convenient adapters:

DC CURRENT—in 11 ranges from 5.5 micro­amperes to 550 miUiamperes, full scale. DC POTENTIAL—11 ranges, 5.5 millivolts to 550 volts, full scale. RESISTANCE—6 ranges, 11 ohms to 5500 ohms full scale. TEMPERATURE from -100°C to 320°C in two ranges with the Fisher Resistance Ther­mometer Bulb. TEMPERATURE from 0 to 1000 °C with a

Chromel-Alurnel thermocouple. PRESSURE—3 ranges: O-1O0 psi, O-5O0 psi, and a compound range for 0-30 " of mercury (vacuum) and 0-50 psi (pressure) . VACUUM—1 t o 1000 microns of mercury. POLAROGRAPHIC CURRENT -with an adapter which makes the Fisher Elecdropode® an automatic recording instrument. pH from 0 to 11 with Beckman H-2 pH Meter and the RECORDALL Zero Shifter.

Other adapter kits are being developed for the functions in greatest demand.

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The Fisher RECORDALL gives you the advantages of a sensitive recorder on all of your busiest instruments. For full details of the RECORDALL and its accessories? write to 717 Forbes St., Pittsburgh 19, Pa., for booklet FS-251-13.

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