I need help to id what this piece of electronics does. I goes all the way thru the center. there is a button on top like push button not a on & off, so when you push its on and as you let off it stops. So I plugged it in and pressed the button I hear a hum as soon as I let off it stops. the center piece slides out and like a pressed cardboard. I will attach a lot of pics.
I bought some electronics most of the stuff is made by electro scientific industries and was part of a system for welding, the company that went out of business built there own resistors. this was part of the lot that came from there. I got from a clean out guy so just his information of where it came from. Possibly not related to that stuff. any help be great been a while since I posted and hope I got the right place to post.

 

there is a label but completely unreadable!!

 

Definitely not electronics!
Looks to me like a home-made degaussing coil for some kind of pipe.
You would slowly feed iron pipe through the hole while pressing the button. This would demagnetize the pipe.

Or it could be a PVC pipe heater. Does the inside get hot?
What is the inside diameter of the hole?

 

I need help to id what this piece of electronics does.

Low-themperature induction tube furnace.
(As @MrChips said above).

 

Definitely not electronics!
Looks to me like a home-made degaussing coil for some kind of pipe.
You would slowly feed iron pipe through the hole while pressing the button. This would demagnetize the pipe.

Or it could be a PVC pipe heater. Does the inside get hot?
What is the inside diameter of the hole?

Its got a cardboard center and dont get hot.

 

Definitely not electronics!
Looks to me like a home-made degaussing coil for some kind of pipe.
You would slowly feed iron pipe through the hole while pressing the button. This would demagnetize the pipe.

Or it could be a PVC pipe heater. Does the inside get hot?
What is the inside diameter of the hole?

it also the white stuff around the copper is a fabric of some sort and copper underneath.

 

Looks like a degausser of some kind.

 

I need help to id what this piece of electronics does. I goes all the way thru the center. there is a button on top like push button not a on & off, so when you push its on and as you let off it stops. So I plugged it in and pressed the button I hear a hum as soon as I let off it stops. the center piece slides out and like a pressed cardboard. I will attach a lot of pics.
I bought some electronics most of the stuff is made by electro scientific industries and was part of a system for welding, the company that went out of business built there own resistors. this was part of the lot that came from there. I got from a clean out guy so just his information of where it came from. Possibly not related to that stuff. any help be great been a while since I posted and hope I got the right place to post.

yeah i must have missed the demagnetized part of the pipe that makes sense and that's what I thought it was. well I had no clue about the pipe but i thought it had something to do with demagnetization Thanks appreciate it!!!

 

Looks like a degausser of some kind.

thanks!!!

 

Looks like a degausser of some kind.

I wonder if when making resistors they needed to demagnetize, this guy I bought this from cleaned out a company that went out or storage for the company. they made resistors and welded them. I bought part of the welding setup. I got a bunch of nice stuff with it. Keithley Null detector, OSI deviation bridge, resistance comparator, Digimetric welder monitor, Durant digital counter, a bunch of decade resistors and there are 3 DIY boxes that have stuff inside that are part of the set up. I'm going to post those up here tomorrow. they got more circuitry. one is just a transformer has not a single marking. I will attach some pics of the electronics that came with this. I bought all one lot. there was like 8 of each item. besides the null detector.

 

Much of this is for very precise resistance measuring of lower value resistors. Good quality equipment if you need to do that. There is also a nice transformer, probably good for 300 to 400 watts. So you have some good equipment for measuring resistance.

 

I wonder if when making resistors they needed to demagnetize, this guy I bought this from cleaned out a company that went out or storage for the company. they made resistors and welded them. I bought part of the welding setup. I got a bunch of nice stuff with it. Keithley Null detector, OSI deviation bridge, resistance comparator, Digimetric welder monitor, Durant digital counter, a bunch of decade resistors and there are 3 DIY boxes that have stuff inside that are part of the set up. I'm going to post those up here tomorrow. they got more circuitry. one is just a transformer has not a single marking. I will attach some pics of the electronics that came with this. I bought all one lot. there was like 8 of each item. besides the null detector.

ESI is a very old tech company. They were founded right at the end of WWII and made-end precision test gear. Well, “make”, I guess, but they were acquired by someone ( can’t recall who). In any case, those are excellent instruments. I’d love to have any of them. They are pure old school but still really good instruments.

I hope they find good homes where they will get some use.

 

ESI is a very old tech company. They were founded right at the end of WWII and made-end precision test gear. Well, “make”, I guess, but they were acquired by someone ( can’t recall who). In any case, those are excellent instruments. I’d love to have any of them. They are pure old school but still really good instruments.

I hope they find good homes where they will get some use.

Thanks for the response. Most of the equipment had calibration dates from November 2022. some it was marked needs work. I sold a good chunk of it already!! I gave some of the stuff that needs work to my grandfather. he likes to restore it and i will sell it for him. he likes tubed electronics mostly but tinkers with it all. he is in his 80s and keeps him busy. I try to get them good homes. I have the instructions for most and I think they bought the equipment in the 80s. I have some receipts from 1981 and 1980 for some of the ESI stuff. at least ESI stuff. Yeah 1944 Brown Engineering was what it was originally called then in 1960 ish maybe 1959 was changed to ESI but then i think in the 80s they were bought out or went public. something happened in the 80s but just recently MK instruments bought them out right before covid!!