Binomax Magnifier.

For a great number of investigations in research and industrial laboratories, a microscope of the ordinary type is not satisfactory. Often a high magnifying power is not required and the objects under examination are not of a suitable shape for placing upon a microscope stage, nor is it convenient to prepare suitable microscopic sections. To fill this requirement we have produced the Binomax. It is a binocular magnifier giving magnifying powers of 4, 8, 16 and 32, and having a very wide field. Binocular vision is of great advantage over monocular, because the view given is natural and is similar to that seen by the eye except that it is on an enlarged scale. Thus the

solidity, depth and true perspective are seen, which is invaluable for examining solid bodies and for dissecting. The Binomax is fitted to various stands, which are described and illustrated, and which are adapted for using the magnifier for different purposes. The uses to which this magnifier can be put are too numerous to detail, but a few may be mentioned. In medical work it is an excellent means of examining skin, hair and bone and makes a good corneal microscope, giving an erect image, and also is invaluable for dissecting work. In a museum a great number of objects in stone, wood and metal, and objects in stone, wood and metal and specimens in troughs and dishes can readily be examined. The Binomax is without equal for examining parts of large objects, as by means of the stand with universal movement, the magnifier can be brought up to the object without the latter being moved. In other branches of work, dealing with such things as flaws in metal, brushwork in paintings, prints and engravings, fabrics and fibres, this magnifier is of the greatest service. In engineering shops, small machined parts are readily examined, and in many works where very fine precision turning is done, a Binomax with universal movements fitted to the lathe itself will prove of inestimable value. In dealing with small objects or for examining parts of large objects where there are no facilities for making regular microscope specimens, the Binomax is the most convenient and satisfactory form of microscope available.

The Binomax consists of two complete microscope systems inclined to each other at the natural convergence of the eyes. Each system has a prismatic erecting arrangement. The interocular distance is adjusted by revolving the prism boxes. The method of obtaining the four powers with only one pair of object glasses is a new one. The object glasses are held in tubular mounts with

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La langue de reconnaissance de l'OCR est l'Anglais.

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