====== Note Spacing ======
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====== Holes / Keys Per Inch ======
===== less than 1 per inch =====
{{search>"per inch|0." -nosearch}}
===== 1 or more per inch =====
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===== 2 or more per inch =====
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===== 3 or more per inch =====
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===== 4 or more per inch =====
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===== 5 or more per inch =====
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===== 6 or more per inch =====
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===== 7 or more per inch =====
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===== 8 or more per inch =====
{{search>"per inch|8." -nosearch}}
===== 9 or more per inch =====
{{search>"per inch|9." -nosearch}}
===== 10 or more per inch =====
{{search>"per inch|10." -nosearch}}
{{search>"per inch|11." -nosearch}}
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{{search>"per inch|20." -nosearch}}


====== Exact Ratios ======
  *1.88{{search>"per inch|1.88" -nosearch}}
  *1.89{{search>"per inch|1.89" -nosearch}}
  *2.00{{search>"per inch|2.00" -nosearch}}
  *2.50{{search>"per inch|2.50" -nosearch}}
  *2.90{{search>"per inch|2.90" -nosearch}}
  *2.92{{search>"per inch|2.92" -nosearch}}
  *3.33{{search>"per inch|3.33" -nosearch}}
  *3.45{{search>"per inch|3.45" -nosearch}}
  *4.00{{search>"per inch|4.00" -nosearch}}
  *4.11{{search>"per inch|4.11" -nosearch}}
  *4.18{{search>"per inch|4.18" -nosearch}}
  *5.00{{search>"per inch|5.00" -nosearch}}
  *6.00{{search>"per inch|6.00" -nosearch}}
  *6.50{{search>"per inch|6.50" -nosearch}}
  *6.74{{search>"per inch|6.74" -nosearch}}
  *7.26{{search>"per inch|7.26" -nosearch}}
  *9.30{{search>"per inch|9.30" -nosearch}}
  *9.60{{search>"per inch|9.60" -nosearch}}
  *10.00{{search>"per inch|10.00" -nosearch}}
  *10.16{{search>"per inch|10.16" -nosearch}}
  *10.60{{search>"per inch|10.60" -nosearch}}
  *12.00{{search>"per inch|12.00" -nosearch}}
  *20.00{{search>"per inch|20.00" -nosearch}}

====== Conversion Chart ======
^per inch^per cm^in spacing^cm spacing^
|1.88|.740|.532|1.35|
|1.89|.744|.529|1.34|
|2.00|.787|.500|1.27|
|2.04|.803|.490|1.25|
|2.50|.984|.400|1.02|
|2.90|1.14|.345|.876|
|3.33|1.31|.300|.763|
|3.45|1.36|.290|.737|
|4.00|1.57|.250|.635|
|4.11|1.62|.243|.617|
|4.18|1.65|.239|.608|
|5.00|1.97|.200|.508|
|6.00|2.36|.167|.423|
|6.50|2.56|.154|.391|
|6.74|2.65|.148|.377|
|7.26|2.86|.138|.350|
|9.30|3.66|.108|.273|
|9.60|3.78|.104|.265|
|10.0|3.94|.100|.254|
|10.2|4.00|.098|.250|
|10.6|4.17|.094|.240|
|12.0|4.72|.083|.212|
|20.0|7.87|.050|.127|

====== Other Information ======
Additional identification data (especially for larger organs) may be found at:

  *[[http://www.mmdigest.com/Gallery/MMMedia/identifying.html|MMD: Identifying music rolls]]
  *[[http://www.mmdigest.com/Gallery/Tech/Scales/index.html|MMD: Scales and Tracker Bars]]

====== Unknown Spacing ======
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