On 7/22/2014 4:20 AM, gareth wrote:
"rickman" wrote in message
...
On 7/22/2014 2:03 AM, gareth wrote:
"rickman" wrote in message
...
On 7/21/2014 6:26 PM, gareth wrote:
"rickman" wrote in message
...
Yes, the knob protrudes, but the skirt of the knob is flush.
I can't see how the arc of the key is important.
Then you have not grasped the point of the discussion.
Gareth, I typed a fair amount explaining my rational (which you
snipped).
Because it added nothing further.

Ok, when you wish to have a discussion, let me know.

Well, I was. But you were off on a different tack.

I am beginning to understand why you get a lot of flack here.

If you aren't interested in discussing the topic, why do you keep
responding? I am beginning to think you truly can't help yourself.
Here is another chance to discuss the topic.

The movement of the end of the finger along the arc of the key does not
need to be the same curve as the movement of the wrist because the
finger provides compliance by bending at the other three joints, plus,
the difference of movement of the two arcs is so miniscule, that it does
not cause a problem in the first place.

My father operated a telegraph key in his job as well as most of the
people he worked with. None of them ever reported any sort of
repetitive motion injury.

BTW, I have the brass key he used.

--

Rick