... lamp ( Type F,G,H,I), 22w(A,B,C,E). Its active arm is a special design. Which can be ... interfere. Our magnifier is used with USA's updated ballast circuit,power can reach more than 0.9, the current flowing ... . Lens:A,B,C,E is φ127mm round lens.C) Usage scopeMagnifier series can be used by circuit board test,stamp collector,infirmary ...