National optical & scientific instruments inc. 6508 tri-county parkway schertz, texas 78154 phone (210) 590-9010 fax (210) 590-1104 instructions for models 211 & 212 (corded) models 211-rled & 212-rled (rechargeable cordless) compound microscopes copyright © 1/14/2013 national optical & scientific i...
Eyepiece (ocular lens) eyepiece tube head of microscope arm objective turret (nosepiece) objective lens specimen holder (mechanical stage) iris diaphragm lever condenser lens stage illuminator field lens housing base coarse focus knob fine focus knob rheostat control tension adjustment on/off switch...
3 for optimum viewing satisfaction, follow these simple procedures. Nomenclature used to describe components and controls can be identified by referring to the diagram at left. Unpacking the microscope and accessories have been carefully packed to assure they reach you in the best possible condition...
4 operation 1. Place microscope directly in front of you in a manner which permits you to comfortably look into the eyepiece. Note that the head of microscope rotates 360º, permitting you to operate the microscope from the front or from the back, whichever is most convenient for you. It also permits...
5 9. Changing magnification. A. Magnification is changed by rotating objective turret until a different objective lens is moved into optical path. Always turn turret until you hear the “click”, indicating that lens is properly indexed. Otherwise, you will not be able to see anything when looking thr...
6 do not remove eyepieces or objective lenses to clean. Clean only the outer lens surface. Breath on lens to dampen surface, then wipe with lens paper or tissue or use a cotton swab moistened with distilled water. Wipe lenses with a circular motion, applying as little pressure as possible. Avoid wip...
7 disconnect the charger from the ac wall outlet and the output cord from recharging socket after 12 hours. Batteries and charger may feel warm when charging, and unplugging the recharger is a safety precaution. You may operate the microscope light even while it is being recharged. Simply flip light...
8 optional accessories and parts: #610-045r wf10x eyepiece w/reticle, 10mm/100div. #615-045 wf15x eyepiece w/pointer #760-045 din 60xr objective lens, n.A. 0.90 #800-001 replacement led light #802-003 auto cut-off recharger for rechargeable led microscopes #801-160 replacement fuse, 0.5 amp, time de...
