LOL, I already tried a 50w mercury lamp in it and it looked good but the 50w lamp is kinda dim. Easy to run MV lamps in it by using remote ballasts, so there is no problem with that
dave look at the top part of the lens can u tell me what yours says my has a date august 17th 1926 mine has more of a point also maybe we can figure yours out i never seen anything like yours either ill look threw my books
The refractor has Rolph sighting marks. Rolph patented the sighting mark in 1931. If you use a 200 watt mogul lamp, here's how you calibrate the lighting pattern using the sighting marks. (wouldn't let me post a clickable hyperlink.) (...)
How old is this thing?