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

Family line

Bulova 8AH (ETA 1000)

Everything (debug)3 calibers2 lineage edges0 related edgesdesign:bulova-8ahcompare specs · 3

This profile traverses clone_of · derived_from · design_imitation_of · ebauche_of · incorporates_module · 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”Heritage · 3 calibersParts cluster (Jules Borel sense) · 1 calibersManufacturer-internal (Ranfft sense) · 1 calibersBased-on star (WatchBase sense) · 3 calibers
100%overlaydrag to pan · ⌘/ctrl + scroll to zoom · hover a caliber to isolate its line
ébauche ofébauche ofBulova 8AH (ETA 1000) — open caliber pageBulova 8AH (ETA 100…1943maker not sourced1 exec · grade ?ETA 1000 — open caliber pageETA 1000—ETA SA Manufacture Horlogère…1 exec · grade ?Wittnauer 9W (ETA 1000) — open caliber pageWittnauer 9W (ETA 1000)—maker not sourc…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
Bulova 8AH (ETA 1000)ébauche of
lineage
ETA 1000staged—
Wittnauer 9W (ETA 1000)ébauche of
lineage
ETA 1000staged—

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/20230906045333/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&Bulova_8AH&
    archivetier 2retrieved 2023-09-061 fact on this page
  2. 2
    Internet Archive
    https://web.archive.org/web/20181108103136/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&Wittnauer_9W
    archivetier 2retrieved 2018-11-081 fact on this page
  3. 3
    Internet Archive
    https://web.archive.org/web/20191117165916/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&ETA_1060
    archivetier 2retrieved 2019-11-171 fact on this page
  4. 4
    Internet Archive
    https://web.archive.org/web/20191120175814/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&ETA_1007
    archivetier 2retrieved 2019-11-201 fact on this page
  5. 5
    Internet Archive
    https://web.archive.org/web/20191121011832/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&ETA_969
    archivetier 2retrieved 2019-11-211 fact on this page
  6. 6
    Internet Archive
    https://web.archive.org/web/20191121065128/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&ETA_1008
    archivetier 2retrieved 2019-11-211 fact on this page