RS PRO Pocket Microscope, 40x Magnification This illuminated pocket microscope from RS PRO is a compact choice for powerful viewing. It has an ocular and objective optical system that provides 40x magnification, so you can view the fine details of an object in low-light conditions. The microscope is simple to use - just pull the two tubes apart to turn on the battery-powered LED light, place the transparent ring onto the viewing surface and look through the eyepiece. You can then use the focus wheel to make adjustments as necessary. It also features adjustable blue-filtered illumination and an integrated 4 mm (horizontal) x 2 mm (vertical) measuring scale with 0.05 mm subdivisions lets you measure objects under the lens. It has an impact-resistant and fire-resistant ABS plastic body for durability and safety. This pocket microscope is a handy, portable option for viewing hard-to-see details. You'll find it useful for hobbies and for examining small objects in manufacturing environments. Features and Benefits - Length of 150 mm - Width of 25 mm - Height of 25 mm - Weight of 30 g - Magnification power of 40x - Horizontal reticule scale of 4 mm (0.05 mm divisions) - Vertical reticule scale of 2 mm (0.05 mm divisions) - Battery-operated blue-filtered LED - Uses two AAA 1.5 V batteries - ABS plastic body