Enter the laser era $295 !
With this new, high-performance Laser, everyone can take advantage of advancing electro-optical technology Coleman Instruments bring you the perfect working laser for coherent light applications in research and engineering. For optical testing. For surveying and alignment. For systems development. For a thousand-and-one practical and experimental uses. Its full name: The Perkin-Elmer Helium-Neon Gas Laser, Coleman Model 75. This new laser emitsoa continuous, TEM 0 0 single mode, red (6328 A) beam in the visible spectrum. I t s full, one-milliwatt output ideally combines safety and effectiveness. Maintaining actual divergence of less than 0.4 milliradians half-angle, the Model 75 beam throws an intensely bright, small spot as far as you can see. Here's the ideal tool for lowering costs in the construction industry, in alignment of mechanical components, centering, determin-
ing levels, grades, straightness, flatness. It's an ideal laboratory instrument, too. The laser head is detachable from the solid-state power supply for investigations in optics. A separate tripod may be used, but is not required. Behind this instrument is the vast laser research experience of The Perkin-Elmer Corporation. Highly skilled Delmar Scientific glassblowers shape the long-lasting laser tube, sealing on pure quartz resonator reflectors. The tube is guaranteed for 1000 hours of use. There are no external optics, no complex adjustments, no maintenance. Just plug the power supply into your line, flip the switch, and you've entered the laser era. All of this utility is available to you at only $295 for the Coleman Model 75. For full information, send for Coleman Bulletin A-317.
COLEMAN
COLEMAN
INSTRUMENTS
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M AY W O O D ,
ILLINOIS
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A Division of The Perkin-Elmer Corporation Circle No. 228 on Readers' Service Card VOL. 40, NO. 2, FEBRUARY I 968
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