[pianotech] Scaling Help

[Pianos and More]

Thank you for the chart Bert
If I get to work on this piano the chart will be helpful
Robert

-----Original Message-----
From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf
Of Albert Picknell
Sent: Monday, 4 April 2011 10:32 a.m.
To: pianotech at ptg.org
Subject: Re: [pianotech] Scaling Help

--- On Sat, 4/2/11, George F Emerson <pianoguru at cox.net> wrote:

> ... if
> you calculate the metric conversion it is closer to a
> half-half size different.  13 gauge = 0.775 MM =
> 0.030512" closer to .031" than .030, but pretty much right
> in the middle between US gauges 13 and 13 1/2.  In the
> larger gauges the calculated inch values, rounded to 3
> decimal places would round down rather than up, but the US
> gauges are still very close to halfway between the metric
> equivalent gauges, not a full half size different.
> 
> Frank Emerson


Actually, there's one slight error here.  0.030512 would be between US
gauges 12 1/2 and 13; I'm sure that's what Frank meant to say.

Other than that, it's right on.

Cheers,
Bert