LINKS

Charts

CENTER PINS
Gauge (G)
Diameter (D) (in)
18 .046
18.5 .047
19 .048
19.5 .049
20 .050
20.5 .051
21 .052
21.5 .053
22 .054
22.5 .055
23 .056
23.5 .057/.0575*
24 .059
24.5 .061*/.062
25 .063
26 .066*
D = (2G + 10) / 1000
G = (1000D - 10) / 2
Guages 24-26 have no calculation
Sources
www.SchaffPiano.com
* www.PianotekSupply.com
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