Nau'i biyu na Er: Gilashin Laser, ɗayan yana amfani da sandar Laser azaman matsakaiciyar aiki, ɗayan yana amfani da bonded er: gilashin don samun matsakaici, Q-swith da fitarwa duka gabaɗaya, wanda ke ba da fa'idodin sauƙin gyarawa da kwanciyar hankali. gini.
Kamar yadda aka nuna kamar haka: