CALIBER/browser
CORPUS EXPORT · 12269 calibers · 59387 family views · round round/2026-09-08Compiled from app/public/data/ · corpus 70c0140eba.

Family line

ETA 2801

Manufacturer-internal (Ranfft sense)1 calibers0 lineage edges0 related edgesdesign:eta-2801

This profile traverses revision_of · variant_of and drops disputed edges. Every edge in this view carries at least one reference.

Same caliber, other senses of “family”Everything (debug) · 2 calibersHeritage · 2 calibersParts cluster (Jules Borel sense) · 1 calibersBased-on star (WatchBase sense) · 2 calibers
100%overlaydrag to pan · ⌘/ctrl + scroll to zoom · hover a caliber to isolate its line
ETA 2801 — open caliber pageETA 28011971ETA SA Manufacture Horlogère…1 exec · grade ?
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

CaliberRelationshipToStatusDetailSources

Curated overlays

A curated family label is an attributed opinion about grouping, not a node in the graph. No edge can point at one, and membership never affects ancestry.

Sources

  1. 1
    Internet Archive
    https://web.archive.org/web/20181107095716/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&ETA_2801
    archivetier 2retrieved 2018-11-071 fact on this page
  2. 2
    Internet Archive
    https://web.archive.org/web/20181107095728/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&ETA_2801_2
    archivetier 2retrieved 2018-11-071 fact on this page
  3. 3
    Internet Archive
    https://web.archive.org/web/20181107095739/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&ETA_2804
    archivetier 2retrieved 2018-11-071 fact on this page
  4. 4
    Internet Archive
    https://web.archive.org/web/20181107095802/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&ETA_2806
    archivetier 2retrieved 2018-11-071 fact on this page