I have one of those in the original box including manual. Don't know in what box that meter is hiding in at the moment. A few years ago I was trying to find the right size batteries for it. Unfortunately, the device needs an odd voltage to operate - they don't make these kind of batteries any more. 

Nick  -  N0NCQ 



Sent from my T-Mobile 4G LTE Device



-------- Original message --------
From: "gil baudot.net" <[email protected]>
Date: 4/2/22 12:16 PM (GMT-05:00)
To: aaa-greenkeys <[email protected]>
Subject: [GreenKeys] OT -- old test gear

a fun bit of old test gear in  nice shape:

https://www.electronicdesign.com/technologies/test-measurement/video/21235784/electronic-design-a-1935-weston-selective-analyzer