This article is from the Piano General Topics FAQ, by Isako Hoshino rmmpfaq@yahoo.com with numerous contributions by others.
Pisaurensis (1533) = 169mm
Ruckers = 167mm
Pratensis (1612) = 166mm
J. Mayer (1619) = 168mm
Giusti (1676) = 174mm
Italian (1695) = 163mm
Kirkman (1767) = 162mm
Graebner (1774) = 156mm
Clavichord,
Schmahl (1794) = 158mm
 
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