The Roto Brake control is designed to mount under the desk top.

Selsyn - (Army Green device above and right) - a system consisting of a generator and a motor so connected that the motor will assume the same relative position as the generator; the generator and the motor are synchronized. [www.thefreedictionary.com/selsyn]

IE: if one turns the other one turns to match it.

W3FRG's GLOBAL BEAM DISPLAY

Tom's Web Page
http://www.globalbeamdisplay.com/

Click to view the display in action
"Video Clip"  http://www.qsl.net/dk7nt/vbimicro/MVI_0255.AVI  

Also, you can read his reviews at eHam
http://www.eham.net/reviews/detail/8059

---

 

K2TQN's Speaking Tour for this Year I will be making a few presentations about the 1923 Bowdoin expedition, titled the “Wireless North Pole and the Adventures of Don Mix” with lots of the original photos. I regret not being able to go everywhere I have been invited. If you are in the area, I hope you will attend. Thursday, March 25, 2010 at 1:00 PM at the CC-AWA meet in Charlotte, NC.