Meade Instruments Corporation
Telescopes · Binoculars · Microscopes


 
Microscope Instruction Manual
 Meade Model 9460
Introduction.

The Meade Model 9460 Microscope is a precision instrument enabling startling views of the microcosmic world with its all-metal construction, fine glass optical elements, and precision adjustments.

Your Meade microscope will be your companion in a hidden realm of unimagined detail and wondrous structures within everyday objects from crystalline structures in minerals to a veritable zoo of microorganisms in a drop of pond water.

Unpacking and Assembly.

Your Meade Model 9460 Microscope requires some minor assembly of the Eyepiece and Objective Lenses.

To complete the assembly, carefully remove each of the three Objective Lenses (6) from their storage bottles and thread them into the Objective Lens Turret (7).

Remove the protective dustcap covering the Eyepiece Drawtube (9).

For final assembly, locate the WF (wide field) 10X Eyepiece (10) or the 12.5X Eyepiece (not shown), unthread the Eyepiece Set-Screw (11) on the microscope's Drawtube (9) with a small flat-head screwdriver, slide the WF10X or 12.5X Eyepiece into the drawtube and gently tighten the Eyepiece Set-Screw.

Using the Microscope.

In any microscope, the objective lens magnifies the illuminated specimen on the microscope stage, and then is further magnified by the microscope's eyepiece. In this way the image can be magnified many times. The Meade Model 9460 Microscope offers magnifications of 100X, 400X, and 1000X with the 10X eyepiece, 125X, 500X, and 1250X when used with the 12.5X eyepiece. The Ocular Head (8) may be repositioned by loosening the 2 Set Screws (21), rotating the Ocular Head as desired, then re-tightening the Set Screws with a small flat-head screwdriver.

To get started, use a prepared microscope glass slide, and place it into position of the center of the microscope Stage over the Condensing Lens (20), by opening the spring-loaded Slide Retainer Lever (16) of the Micrometric Mechanical Stage (5) and gently letting it pivot closed on the edge of the slide. The spring tension will hold the slide in place. Transverse (13, behind the objective lens in photo) and Longitudinal (12) Control Knobs permit the smooth positioning of the specimen slide. A vernier scale is provided to permit accurate measurements to be made. An Attachment Screw (14) permits the Micrometric Mechanical Stage to be removed, if desired.

Plug the cord into a standard 115v.AC outlet, and turn on the Illuminator (2) by toggling the On-Off Switch (1). Look through the Eyepiece and check that illumination is seen through the Eyepiece. Opening the Iris Diaphragm (4) clockwise will ensure that the maximum amount of light illuminates the specimen.

Always start observing using the lowest magnification with the microscope. In the case of the Meade Model 9460, use the 10X Objective Lens (6) by rotating the Objective Lens Turret so that the 10X Objective Lens (engraved "10/ 0.25") is aiming at the center of the Stage (when it is in the proper position it will click into place). The 10X Objective Lens will give a 100X (100 power) view with the 10X Eyepiece. Final Power is calculated by multiplying the Objective Lens Power by the Eyepiece Power (e.g., 10 X 10 = 100).

Focus the microscope by slowly turning the coarse Adjustment Focus Knob (17), until an image forms in the Eyepiece. Then with the Fine Adjustment Knob (18), slowly rack the focus back and forth to get the best image, or to reveal hidden structure at different depths of the specimen being examined. Note that the WF10X Eyepiece has an internal pointer to reference a specific region in the object being examined.

If the image appears too bright, rotate the Abbe Condensing Lens (19) and Iris Diaphragm (4) until a comfortable view is seen. If the image is too dim, use the largest aperture and increase the concentration of light through the Abbe Condensing Lens.

To increase magnification, rotate the Objective Lens Turret to center the 40X Objective Lens over the specimen for 400X, or the 100X Objective Lens for 1000X. Changing to the 12.5X Eyepiece will yield magnifications of 125X, 500X, and 1250X. When using higher magnifications focusing becomes more critical and the objective lens will come closer to the specimen in order to reach focus. A Focus Stop (15) is provided to prevent the Objective Lens from contacting the specimen. Use the same techniques in coarse and fine focusing as described above.

A Filter Tray (3) allows the insertion of the various colored filters provided. To use, grasp the round knob and swing out the Filter Tray. Carefully insert a colored filter, and pivot the Filter Tray back into position under the Abbe Condensing Lens. Various colors will enhance and highlight features of the specimen.

Maintenance.

As with any quality instrument, your Meade Microscope should be stored in a cool, dry place free of dust, acid and fumes.

The lenses of your Meade Microscope should be cleaned as infrequently as possible. Tiny particles of dust on the surface of the lenses causes negligible loss of image quality. In all cases avoid touching the optical and mirror surfaces, and never disassemble the optical parts of the microscope.

When lens cleaning does become necessary, use a camel's hair brush or compressed air gently to remove dust. If the microscope is covered with the provided plastic bag between use, cleaning of the optics will rarely be required.

To replace the Illuminator Light Bulb, unscrew the Electric Illuminator cover (2) and carefully remove it. The spent bulb is pushed down and rotated about 30° counter-clockwise to remove. Installation is accomplished by reversing the removal procedure.

Specifications.

Magnifications: 100X, 400X, and 1000X with WF10X eyepiece, 125X, 500X, and 1250X with 12.5X eyepiece
Objectives: 10/ 0.25 (10X), 40/ 0.65 (40X), and 100/ 1.25 (100X)
Eyepieces: Multi-coated Wide Field 10X and 12.5X
Focuser: Rack-and-Pinion Type, with coarse and fine adjustment
Stage Size: 118mm X 118mm with transverse (50mm) and longitudinal (25mm) adjustments
Illumination: Electric illuminator (20W)
Viewing Angle: 45 degrees
Weight: 8.5 lbs.

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