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  • Dufaycolor: materials, techniques and deterioration
    … set up the shots before turning on the light to minimise exposure of Dufaycolor transparencies to light . The magnifiers used were an 8x Nikon loupe and a 30x National pocket microscope.
  • Close Focus Dual Purpose Microscopes | Edmund Optics
    • Pocket and Direct Microscopes • Magnifiers • 25X, 30X , 35X, 40X, 45X Models Clear acrylic base allows the instrument to rest directly on a flat object, while passing ambient light .
  • A practical guide to low vision management of patients with diabetes
    Low vision devices including a pocket magnifier and two stand magnifiers The light and dark adaptations may be slower.24 Typically, approximately 30x to 40x mag- nification can be achieved depending on the size of the screen …
  • Resources for optics in middle school education
    … b) form a virtual image using a positive lens, i.e., a simple magnifier , and (c) form … … of different brightness, but for a different reason, because the same amount of light through each lens … If nothing else, obtain some simple 30X low-power pocket microscopes and have the students look at various objects.
  • 25X Portable Measuring Microscope | Edmund Optics
    • Magnifiers Clear acrylic base allows the instrument to rest directly on a flat object, while passing ambient light . 30X Deluxe Direct Measuring Pocket Microscopes .
  • High Power Stereo Microscope | Edmund Optics
    • Pocket and Direct Microscopes • Magnifiers • 20X/40X or 30X /60X Magnification Fiber Optic Ring Light Guides .
  • Advertisements
    Designed specifically for cartographic applications, it has a fixed gantry and uses a light spot projector on … Add a 30x telescope with coarse! fine focussing, an optical sight and a detachable carrying handle. Compasses, Clinometers, Levels (Telescopic and Abney), Soil Samplers, Surveying Instru- ments, Forestry Tools; Optical Instruments, Telescopes, Binoculars, Magnifiers , Range- finders and Stereoscopes, Geological Ham- mers, Altimeters (Surveying and Pocket ).
  • ASTM MNL17 - Paint and Coating Testing Manual: Fifteenth Edition of the Gardner-Sward Handbook
    Stereo or stereobinocular microscopes are the next step up from simple magnifiers . Samples can be viewed using various lighting conditions and in most instances sample prepara- tion is minimal. … with these systems is the inadvertent inclu- sion of air bubbles or air pockets under the coating … CC C - CALCITE, 30X .
  • ASTM MNL17 - Paint and Coating Testing Manual: 14th. Edition of the Gardner-Sward Handbook
    … ganic Coatings to the Effects of Rapid Deformation (Impact) (D 2794) describes such a test procedure and offers three procedures for determining the degree of cracking produced in an impact deformation: (a) visual inspection with a magni- fier , (b) visual inspection after … … parts are connected in series, the transformer being used to step down ordinary light voltage to that … markets a pocket -size hardness tester, Model 318, shown in Fig. 4, that somewhat resembles a mechanical … 30X .
  • Metallography: Principles and Practice
    … accomplished with amateur or professional cameras, with a simple microscope, or with a magnifier using a magnification … LIGHT MICROSCOPY 3 1 9 30X These techniques are quite simple to perform since the introduction of inexpensive but powerful pocket calculators.