[CW] What is a Stair Gauge used for??

[ki7wo-1 at comcast.net]

Hi Guys, 

I was reading about using the stair gauge to slow down the CW, 

However, I may be the only one on the list that does not know what a stair gauge is "normally" used for. 

If you would be so kind at to enlighten a bit further 

Please and Thank You, 

AND 73, 

ALAN KI7WO at ARRL.NET 
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.qth.net/pipermail/cw/attachments/20151225/2a9b0e34/attachment.html>