National optical & scientific instruments inc. 6508 tri-county parkway schertz, texas 78154 phone (210) 590-9010 fax (210) 590-1104 instructions for model 111 compound microscope copyright © 1/2/01 national optical & scientific instruments, inc..
Eyepiece eyepiece tube arm of microscope focus knob on/off switch tension adjustment (behind focus knob) microscope head objective turret objective lens stage clip safety rack stop base illuminator field lens housing condenser lens (located in center of stage) disc diaphragm eyepiece locking set scr...
3 introduction thank you for your purchase of a national microscope, it is a well built, precision instrument and carefully checked to assure that it reaches you in good condition. It is designed for ease of operation and years of carefree use. The information in this manual probably far exceeds wha...
4 2. 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 360 º , permitting you to operate the microscope from the front or from the back, whichever is most convenient for you. It also permits conveni...
5 note: take care when rotating 40x objective into place. This is the longest lens and has a spring retractable mechanism which retracts slightly into its housing if the front of the lens comes in contact with the specimen slide while focusing the microscope. This prevents damage to the lens or slid...
6 3. Electrical maintenance warning: for your safety, turn switch off and remove plug from power source before replacing bulb. Make sure that illuminator housing and lamp are cool before servicing. A. Remove illuminator field lens housing by rotating in a counter-clockwise direction. B. Note that th...
7 optional accessories and parts: #615-045 wf 15x eyepiece w/pointer #800-102 replacement bulb, 115v 20 watt, d.C. Medium bayonet base #800-102-220v replacement bulb, 220v 20 watt, d.C. Medium bayonet base (for use in locations having 220v electrical supply) limited lifetime warranty please see our ...
