MANUFACTURERS' LITERATURE Analytical Balances. Illustrated fourpage bulletin describes and gives speci fications for the Mettler Type S digital analytical balances. Two models are covered: the S5 macro balance and the S6 semimicro balance. E. H. Sar gent & Co. {Bull. MS). 617
MORE ACCURATE
High Voltage Power Supplies. Illus trated 8-page brochure describes the company's line of electrostatic genera tors with outputs from 50 to 600 kv. for use in nuclear physics, electron mi croscopy, x-ray generation, and other activities. Schematic diagrams in cluded. SAMES-USA. 618 Optical Terminology. Single sheet contains the first in what is planned as a continuing series of glossaries on technical terminology. The glossaries are designed for use by industrial execu tives and by educational institutions as a teaching aid. Servo Corp. of America (Glossary of Optical Terminology). 619
Power Supply. Four-page bulletin describes a transistorized power supply having an operating range of 0 to 60 volts and 0 to 2 amperes. Illustrations and curves of operating characteristics are included. Princeton Applied Re search Corp. (Bull. 101). 620 Airborne-Particle Monitor. Single illustrated sheet describes the digital Model PC 200-A unit, Physical and electrical characteristics are covered, and prices are included. Royco Instru ments, Inc. 621 Instruments Catalog. Illustrated 72page catalog covers instruments de signed and manufactured by the com pany, including the Models MR and SR recorders, Models XV and XXI Polarographs, and the Model D re cording titrator. E. H. Sargent & Co. (Booklet 62). 622 Chemicals. New line of fine organic chemicals and biochemicals for aca demic and industrial research is shown in catalog issued by this year-old com pany. Frinton Laboratories. 623 Discussion on Leasing. Fifth edition of 24-page study discusses advantages and disadvantages of leasing equipment. Analyzes comparative costs of leasing and various forms of purchase, re newals, purchase options, Internal Revenue Service rulings, and specific situations. Single copies available free-of-charge to business executives. Write directly to Foundation for Man agement Research, 121 West Adams S t , Chicago 3, 111. (The Pros and Cons of Leasing).
Bausch & Lomb
PRECISION REFRACTOMETER Read accurately to .00003 with the Bausch & Lomb Precision Refractometer—three times the accuracy of standard Abbe instruments! This means dollars and cents savings to you in any quality control operation requiring precision grading. Test transparent and opaque samples by transmitted or reflected light. 1.20n D -1.70n D range with two quickly interchangeable prisms. And . . . you get fast, accurate readings year after year because parts are compensated against wear. (Test prisms, available for instrument check, certified by U.S. Bureau of Standards.) Made
in America
highest
by America's scientific
to the
standards—and most
instrument
world's supported
dependable dealers.
BAUSCH & LOMB
BAUSCH & L O M B I N C O R P O R A T E D 6 0 9 2 5 Bausch S t . , Rochester 2 , Ν . Υ . Send me complete data on the following B&L Refractometers: Π Precision π Industrial Q Hand
H S?bj?"2L
....
D But
y°
•
Jui
«
D High Range Abbe-3L • Dipping D I'd like a demonstration of the models checked above NAME, TITLE COMPANY ADDRESS CITY
ZONE
STATE
Circle No. 11 on Readers' Service Card VOL. 3 4 , N O . 1 , JANUARY 1 9 6 2
·
129
A
