[Hallicrafters] any who worked for Hali still on?

[Robert Nickels]

Dan Cotsirilos K9DTC wrote:
> I just got a very interesting item that has what looks like a Hallicrafters inventory sticker on it? The instrument is some type of amp meter made by Esterline-Angus. It is all black with a glass front that has a graph similar to a lie detector. Is this familiar to anyone?
>
>   
Dan,

Esterline-Angus (now Esterline Technologies Inc, is still in business, 
(NYSE ESL).  While primarily now an aerospace company, they made chart 
recorders for years.  Companies like Hallicrafters would have used these 
recorders for any number of test and measurement tasks, such as 
monitoring circuit performance, temperature, frequency variation, etc 
over time.   The chart recorder will have a motor that can be adjusted 
to various (slow) speeds to esablish the timebase for the recording, 
along with signal conditioning and amplification to drive the pen that  
traces the recording on the moving paper.   Pretty much what we'd use a 
PC with a data acquisition system or datalogger for today.

73, Bob W9RAN