08-09-2007, 10:44 PM
I use the Type 55 dial lamp in 1936, 37 & 38 Philcos. The large socket & collar assembly was designed for this bulb, and it gives out a bit better light than does the Type 44 in this application. The Type 44 should, as mentioned, be used as the shadowmeter lamp.
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Ron Ramirez
Ferdinand IN