Caliber reference
Miyota 9019 caliber: dimensions and drop-in group
The published footprint of the Miyota 9019 and which movements share it.
Used in: a slim no-date 90-series automatic, in clean-dial dress and field watches.
A 90-series slim automatic at 26.00 mm x 3.90 mm without date, sharing the 9015/9039 footprint and dial feet. It drops into a 90-series case built for a clean no-date dial.
Drop-in group: Miyota 90 slim footprint (26.00 mm x 3.90 mm). Matching diameter and height is necessary but not sufficient. A donor is only a true drop-in when the dial-foot positions, hand-hole sizes, stem length and calendar layout also match. Two movements can share a case and still need a new dial, re-broached hands or a cut-to-length stem.