... A) SummarizeMagnifier series are F-500A,F-500B,F-500C,F-500E,F-500F,F-500G,F-500H,F-500I (including green glass and ... last serial number of white glass such as F-500AB).These magnifier matches 12W cirle fluorescent lamp ... ). 14W(2x7w) U shape fluorescent lamp ( Type F,G,H,I), 22w(A,B,C,E). Its ... lens.C) Usage scopeMagnifier series can be used by circuit board test,stamp collector,infirmary,beauty parlor, ...