Alvin - Magnifier Lamp - T5 22 Watt - Black - The T5 Black Magnifier Lamp by Alvin is a professional, low heat magnifying lamp with high quality, its extra-large 5 inch diameter lens features a fully adjustable internal spring arm with a 45 inch reach. The T5 Magnifier Lamp has a convenient stay cool handle on head for positioning. 3-diopter glass lens provides 1.75x magnification. Removable protective lens cover makes this magnifier lamp usable as a table lamp. The T5 Magnifier Lamp uses one T5 22w daylight simulation bulb (included). Includes heavy-duty adjustable desktop mounting clamp that fits up to 2.5 inch thick surfaces. All metal construction. UL listed. Alvin is one of the primary sources for drafting supplies and drawing equipment in the country. Creative Coldsnow is a pround retailer of Alvin graphic arts, drafting and fine arts products.