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Aviation History
1943
1943 - 2329.PDF
SEPTEMBER 23RD, 1943 FLIGHT Advertisements. 23 Intimate Detail In both research and routine scientific control, the microscope is one of the most important pieces of equipment of a modern metallurgical laboratory. Among the various forms of the instru- ment used, two main types are dis- tinguishable, that employed for visual examination and that used for the making of photomicrographs. Shown here is the mechanical stage of a modern metallurgical micrograpliic camera, on which is mounted a pre- pared specimen of MAGNUMINIUM magnesium alloy. The polished surface to be microphotographed is placed face downwards over a variable aperture. The instrument incorporates a source of light, a camera and elaborate optical systems for directing the light on the prepared surface, magnifying up to 1,000 diameters and projecting it upon a photographic plate with further mag- nification to 3,000 diameters. The stage may be rotated through 360° or trans- lated along its rectangular co-ordinates, the angles of rotation or distances tra- versed being measured by the gradua- tions shown. This is a further reminder of how the latest discoveries in scientific knowledge and equipment ensure that Magnumin- ium is kept in the forefront of modern de- velopments in Industry's lightest metal. MAGNUMmiUM MAGNESIUM CASTINGS & PRODUCTS LTD • SLOUGH
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