[GreenKeys] tuning fork frequency?

[Jim Haynes]

On Sat, 15 Mar 2008, Randy or Sherry Guttery wrote:

> David Ross wrote:
>
>> What tuning fork should I use to check the speed of a Model 28 KSR motor?
>
> 120cps.
>
Which suggests you could use a fluorescent light rather than a tuning
fork.