1. The Northwest Microscope

2. The Ocular Lens

3. Ocular Magnification = ___ X

4. The Ocular Lens Ocular Magnification = 10 X

5. The Low Power Objective Lens Magnification = 4 x

6. Ocular magnification x Objective magnification = Total Magnification Eg. For the low power objective: Ocular magnification x Objective magnification Total Magnification = 10 x 4 = 4

7. Ocular magnification x Objective magnification = Total Magnification Eg. For the low power objective: Ocular magnification x Objective magnification Total Magnification = 10 x 4 = 40x 4

8. The Medium Power Objective Lens

9. Objective Magnification = 10 x

10. Ocular magnification x Objective magnification 10 x 10 = 100 x Total Magnification =

11. The High Power Objective Lens Magnification = 40 x

12. The High Power Objective Lens Magnification = 40 x Total Magnification = 10 x 40 = 400 x

13. The Light Switch

14. Course Focus Adjustment Knob

15. Course Focus Adjustment Knob Fine Focus Adjustment Knob

16. The Stage

17. The Stage Clips The Stage The Stage Clips

18. The Stage The Stage Clips The Center of the Stage

19. The Light Control Disk

20. - the larger the hole below the object, the more light gets through to the object. The Stage

21. The Boreal Microscope

22. The AC Adaptor Plug into outlet

23. This end plugs in HERE

24. The ON/OFF Switch for the Light

25. The Ocular Lens Magnification = 10 x

26. Low Power Objective Lens Magnification = 4 x

27. Medium Power Objective Lens Magnification = 10 x

28. High Power Objective Lens Magnification = 40 x

29. Light

30. Light Control Diaphragm Stage

31. Course Focus Adjustment Knob

32. Fine Focus Adjustment Knob

33. Stage

34. Stage Clips

35. 4 When you put the microscope away, the LOW power objective lens should be right on top of the center of the stage !!!!!!

36. 4

37. This is the Cover !

38. Put the cover over the microscope before you leave!!

39. Steps in Viewing a Prepared Slide

40. 1.Click LOW power objective on top of the center of the stage.

41. Steps in Viewing a Prepared Slide 1.Click LOW power objective on top of the center of the stage. 2.Clip Slide under clips

42. Steps in Viewing a Prepared Slide 1.Click LOW power objective on top of the center of the stage. 2.Clip Slide under clips 3. Align so object being viewed is right in the very center.

43. Steps in Viewing a Prepared Slide 1.Click LOW power objective on top of the center of the stage. 2.Clip Slide under clips 3. Align so object being viewed is right in the very center. 4. Adjust focus with course and then fine adjustment. Make sure the object is in the very center before you switch to a higher magnification.

44. Steps in Viewing a Prepared Slide 6. Click Medium (10 x ) objective lens Into place above the slide.

45. Steps in Viewing a Prepared Slide 6. Click Medium (10 x ) objective lens Into place above the slide. 7. Focus with fine adjustment knob. ( You may have to move the slide a bit to keep the object in the center)

46. Steps in Viewing a Prepared Slide NOT 6. Click Medium (10 x ) objective lens Into place above the slide. 7. Focus with fine adjustment knob. ( You may have to move the slide a bit to keep the object in the center) 8. If you require, switch to HIGH power objective. Do NOT use the course adjustment knob!!! MAKE SURE THE LENS DOES NOT TOUCH THE SLIDE !!!!