Equipment news Available to Purchase

Data recorder. Now being marketed in this country is the improved Model SR recorder (Fig. 1) manufactured by E. H. Sargent & Co. of Chicago, U.S.A., which incorporates a number of interesting new features. It is an accurate automatic potentiometer to plot d.c. potential and voltage directly and continuously, or current, temperature, thermal conductivity, pH, light transmittance and a host of other quantities indirectly through transducing devices or instruments. Measurements are recorded with respect to time or any other quantity which may be sychronised in time by constant speed drive.