. Set-pins that enable a component part to be removed and replaced in the exact same position.

Dutch term for a hand-cranked organ, usually of the barrel or cardboard music type.

Music roll arrangement that is created on a special drawing board equipped with a roll of paper and scale sticks for the note placement and length. Certain early drawing board arrangements, such as some of those by Wurlitzer’s arrangers who were paid by the foot of paper churned out, are very mechanical and repetitious sounding. Others, such as Gustav Bruder’s superb Weber Maesto rolls, are remarkably lifelike and exciting.

German term for a hand-cranked barrel organ. * From the German drehen, (to turn).

The gear which is driven by the spring barrel and delivers the spring tension to the cylinder arbor.