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Glossary of watchmaking

A wrought-iron dividing head (18th century)
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Dividing head (Division plate)

Diviseur | 分割盤／ブンカツバン | 分度头(分度片)

A wrought-iron dividing head (18th century)

A disc with evenly spaced notches around its circumference for dividing the circumference of gears prior to cutting the required number of teeth.

Terms with the same letter

Dart (Guard pin) Date Dauphine Day Daylight Saving Time Dead seconds Decimal (Revolutionary) (Republican) Decimal hour Demantoid garnet Detent Dial Dial foot Diamond Dichroism Die Diffusion treated Digital Direct-drive seconds (Trotteuse) Disc Disconnect Display Display lighting Dividing head (Division plate) Drift Drum Dual time zone Dumortierite Dynamograph