This appears to be a Diode Test Set that was used inside HP as part of their manufacturing process. I got it from an eBay seller in Santa Rosa that's near an HP (now Agilent facility) Most likley this test set allows visulaization if the I-V curve of a diode. A sticker on the front says Modified, 1.2 ma 6 VPP. These limits would be approiate for almost any diode including microwave diodes.
The CRT is a 2BP1 and there is one each 6BH6 and 6J6A tube inside.
If you know what this was used for email to brooke(at)pacific(dot)net
Back to Brooke's Test Equipment, Microwave Test Equipment, Electronics, Home page
This is the [an error occurred while processing this directive] time this page has been accessed since since 28 Feb 2001.