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What Is This Thing? Science Related...  
User currently offlineFalstaff From United States of America, joined Jun 2006, 6075 posts, RR: 29
Posted (5 years 1 month 2 weeks 1 day 12 hours ago) and read 2803 times:
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What is this thing? The school where I teach is being remodeled (first time since 1957) and all kinds of odd things are being thrown out. The head of the science department brought me this thing because he knows I like odd things. He couldn't tell me what it was and none of our other science teachers could either. You are looking at the front side, the back side looks exactly the same except that the pointer is black, instead of red. The two things sticking up on the base are screw connectors for something, I assume wiring. This device was made by W.W. Welch of Chicago, Illinois.

If you are wondering, the thing next to it is a Union Switch & Signal Vane Line Relay for 1910's railroad signals.

http://i204.photobucket.com/albums/bb309/NWA747/oddthing002.jpg


My mug slaketh over on Falstaff N503
4 replies: All unread, jump to last
 
User currently offlineHomer71 From United States of America, joined Jul 2001, 2241 posts, RR: 15
Reply 1, posted (5 years 1 month 2 weeks 1 day 12 hours ago) and read 2783 times:

Maybe an old ohmmeter?

(edit) or an old voltmeter?

[Edited 2009-06-16 12:38:12]


"On spaceship earth there are no passengers...only crew."
User currently offlineAF340 From Canada, joined Jul 2007, 2786 posts, RR: 4
Reply 2, posted (5 years 1 month 2 weeks 1 day 12 hours ago) and read 2780 times:

My bet is it's a Galvanometer:


http://en.wikipedia.org/wiki/Galvanometer




Liam


User currently offlineJBirdAV8r From United States of America, joined Jun 2001, 4488 posts, RR: 21
Reply 3, posted (5 years 1 month 2 weeks 1 day 12 hours ago) and read 2753 times:



Quoting AF340 (Reply 2):
My bet is it's a Galvanometer:


http://en.wikipedia.org/wiki/Galvanometer




Liam

That was my first thought, and I'll second that opinion.  checkmark 

W.W. Welch...wonder if that's part of the modern day Sargent-Welch?



I got my head checked--by a jumbo jet
User currently offlineAverageUser From , joined Dec 1969, posts, RR:
Reply 4, posted (5 years 1 month 2 weeks 17 hours ago) and read 2631 times:

This would seem to be a slighty more modern version:



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