Bechstein hammer bore

[Farrell]

Or, use an electronic angle gauge, do it in a bout 8 seconds, and you don't 
even have to level the piano!

Terry Farrell

----- Original Message ----- 
> At 15:21 -0800 15/2/08, David Ilvedson wrote:
>
>>How do you measure the angle of the strings?
>
> It can be done with a lath and a plumb-line or pendulum.  The thing I use 
> is a bit more elaborate, but that's the principle.  The lath is of 
> hardwood about 45mm wide, so it will fit on the top unison, and 10mm thick 
> and a foot or so long, cut perfectly square.  You have to park the piano 
> on the level, of course!
>
> JD
>
>