Abstract
WE have received from Messrs. W. Watson and Sons, Ltd., the new edition of their catalogue of microscopes and accessories (Parts 1 and 2). The pages devoted to principles of construction on the optical bench system, now applied to all Messrs. Watson's microscopes, are of particular interest, and other constructional details in these pages are also noteworthy as evidence of the care devoted to the attainment of rigidity and accuracy. Attention may also be directed to the description of the dark ground condenser which can be made with working distances up to 4 mm. and to the low-power binocular dissecting microscope, strong in build and with two pairs of objectives mounted on a double nosepiece so arranged that the pair not in use is turned into a protected position. A considerable range of lamps for various microscopic purposes includes the Greenough lamp, which rests on the table beneath the microscope stage in place of the mirror and gives an evenly illuminated field, provision being made for centring the filament.
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Catalogue of Microscopes and Accessories. Nature 135, 467 (1935). https://doi.org/10.1038/135467d0
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DOI: https://doi.org/10.1038/135467d0