where ruggedness and reliability are as essential as optical quality
NIKON SBR laboratory microscope The Nikon SBR is a solidly built, yet incredibly flexible laboratory instrument. A veritable workhorse for routine applications, its ready adaptability, whenever special problems arise, is no less astonishing. Essentially, the SBR consists of the basic Series S microscope body equipped with dust-proof, quadruple nosepiece, mounted in ball bearings; rotating binocular head; and rotating, rectangular graduated mechanical stage whose coaxial controls can be operated with either hand. Tension-adjustable, focusing controls are located on both sides of the instrument. And a stage-stop lever can be preset to prevent accidental contact between the slide and objective. All controls are low-positioned. Whether focusing, or manipulating other controls, the one thing that impresses you about the SBR is its rocksteady mechanical stability. There's nothing finicky about any of the adjustments. Once set, they stay put. There's
no loss of time or temper having constantly to reset and readjust them. But, apart from the ruggedness, versatility and smooth mechanical responsiveness of the Nikon SBR, the quality that commends it above all else is its optics. You will find it difficult to duplicate its performance with any other microscope — for uniformity and brightness of field, imag'e resolution, and for the visual comfort and ease you enjoy even with prolonged use. Building-block design readies the SBR for any number of special applications. It accepts dark-field and phase-contrast equipment, interference-phase and polarizing attachments, photomicrographic equipment, projection head, and a wide variety of eyepieces, objectives, illuminators, measuring reticles, and other accessories. For complete details, write to Dept. AC-3.
NIKON Instrument Division of Ehrenreich Photo-Optical Industries, Inc. I l l Fifth Avenue Circle No. 1E3 on Readers' Service Card 86 A
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ANALYTICAL CHEMISTRY
New York 3, New York
