... fluorescent lamp ( Type F,G,H,I), 22w(A,B,C,E). Its active arm is a special design. Which can ... over current flow in abnormal circumstance.7. Lens:A,B,C,E is φ127mm round lens. Type D is φ90mm plus ... φ12mm.C) Usage scopeMagnifier series can be used by circuit board test ... lock up until the power is turned off. F-500D ESD Magnifying Lamp