Family line
ETA 2550R
This profile traverses clone_of · derived_from · ebauche_of · licensed_copy_of · module_on · revision_of · tooling_transfer_of · variant_of and keeps disputed edges. Every edge in this view carries at least one reference.
Same caliber, other senses of “family”Everything (debug) · 3 calibersParts cluster (Jules Borel sense) · 1 calibersManufacturer-internal (Ranfft sense) · 1 calibersBased-on star (WatchBase sense) · 3 calibers
Edge types in this family
accepteddisputedcontested region
Generations run left to right, ancestors first, and the axis along the top is ordinal rather than linear: each band is one generation, labelled with the range of sourced introduction years it contains. A band reads “—” when no caliber in it has a year anyone published — the gap is the finding, not a rendering failure. Dotted arcs above and below the drawing are related edges — successor, drop-in, no-derivation — which are stored in a different table from lineage and can never form part of an ancestry path.
Every edge in this view
| Caliber | Relationship | To | Status | Detail | Sources |
|---|---|---|---|---|---|
| Hamilton 781 (ETA 2550R) | ébauche of lineage | ETA 2550R | staged | — | |
| Zodiac 46 (ETA 2550R) | ébauche of lineage | ETA 2550R | staged | — |
Sources
- 1Internet Archivehttps://web.archive.org/web/20181107163355/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&Hamilton_781archivetier 2retrieved 2018-11-071 fact on this page
- 2Internet Archivehttps://web.archive.org/web/20181108111445/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&Zodiac_46archivetier 2retrieved 2018-11-081 fact on this page