The 'sicle' that got away!!

[Richard Flanders]

Most of the numbers on the old RCA vacuum tubes are worn off or never existed. There's 807 with a white ceramic base, a few with 31, a 231-31x. The one you were referring to has no numbers left. Two of the safety valves are set at 196#, one at 241, one can't read These numbers indicates steam to me vs air. A few more pics, one of the 'tool holder' - certainly someone knows what that is?? I guess I'll have to post a pic of the tools that are used in conjunction with it (first pic here). One pic also of the smaller variety that is at least mounted in the proper orientation - my high school slide ruler is behind it. The Cone "Glocoils" are quite the item. I can tell you those buggers get VERY hot when you power one up. I found a huge stack of these somewhere and brought two unused ones home.