[GreenKeys] Polar relays anyone?

[Bill Abate]

Continuing to dig through my storage I found some polar relays.  I 
remember using them extensively many years ago.  Anyone still use them? 
  I have three types, the venerable 255A (aligned), 314A (sealed and 
pressurized) and a Sigma (small octal plug in case).  $5 for the 255A, 
$10 for the 314A and Sigma, plus postage.

BTW, if anyone is interested, I have a pristine Western Electric I-193A 
polar relay test set.  Has the special adjusting tool and two reference 
polar relays and manual.  Requires 120 VDC.  $65 plus shipping.

73,

Bill, K3PGB