I did not attempt to repair the laptop again, blocked fan exhaust, overheat conditionsmotherboard is defective, no good. A circuit trace runs from the negative dc jack pin right under this PL chip. I might of been able to get laptop going again, it most likely would of went out again after a few weeks, and an on going repair.
Early seafarers relied on celestial navigation and primitive means to navigate the seas. This practice of using crude figures to chart a course typically led to erroneous data, which often meant death at sea. Fisherman, explorers, pirates, and cartographers quickly learned the critical nature of course data; accuracy was paramount.
Nautical charts often contained tiny, difficult to read typeface that compounded the already difficult task at hand. One instrument developed by early navigators to improve precision was the chart magnifying compass. The magnetic needle is balanced on a brass extension arm and is completely encased by the magnifying lenses.
The lower lens is flat and smooth, made to glide effortlessly across a reading surface. The upper, convex lens allows viewing of a clear, magnified surface.
To protect the compass needle while in transit, a rotating knob near the fob operates a needle lift. This chart magnifier and magnetic compass measures 3 inches 7.
The compass weighs 8. Approximately 13 lines of text with 6 words per line can be engraved on a custom plaque for the outside lid and about 12 lines with 6 words per line can be engraved on a plaque for the inside lid.
We also offer a Forestry Clinometer Compassa Chart Compassand an inexpensive plastic version of this compass.Get all your promotional magnifiers from AnyPromo.
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YOCTOSUN Inch Acrylic Paperweight Reading Magnifying Glass 5X Dome Magnifier Optical Half Ball Lens with Gift Box and Polishing Pouch (95mm). Exporter of Nautical Survey Equipment - Dip Circle, Nautical Telescope, Navigation System and Portable GPS System offered by Jupiter Scientific Company, Salem, Tamil Nadu.
Paperweights carried this technique a step further by encasing the canes in a magnifying glass dome. Artistically, the clear glass dome that surrounds a paperweight serves many of the same functions as the canvas painted on by an artist.