The Student Advanced 4 Microscope is great for students in a high school biology class.
For the teacher that wants more than just the basic microscope for his classroom this advanced model is an excellent choice. The 1.25 ABBE condenser allows the addition of a100x oil immersion objective. The iris diaphragm allows precision adjustments to the cool fluorescent light.
Construction:

Heavy cast alloy.

Acid and reagent resistant finish.

All metal gearing.
Head:

Standard monocular Head.

Bearing mounted, rotates 360°.

10X/18 wide field eyepiece.

Locked-in eyepiece with pointer installed.

Teaching Head available.
Objectives:

Four position Nosepiece.

DIN Achromatic 4X, 10X, 40XR (retractable).

Optional 100x oil objective.

Parfocal and parcentric.

Pre-drilled and tapped for optional mechanical Stage.

Spring-loaded slide clips included.

Stage size: 110mm x 110mm.
Adjustment Controls:

Coarse and fine Focus with tension adjustment.

Adjustable Stage stop.
Illumination:

NA 1.25 ABBE condenser.

Iris Diaphragm.

5w fluorescent.

Input 110V (220V optional).
Accessories Included:

Dust cover, blue and green filters, fuse, spare bulb, manual and warranty card.
Dimensions:

Height: 14″.

Length: 7.0″.

Width: 5.25″.