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

Family line

BM 12800 (Buren 1280)

Everything (debug)4 calibers3 lineage edges0 related edgesdesign:bm-12800compare specs · 4

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 · 4 calibersParts cluster (Jules Borel sense) · 1 calibersManufacturer-internal (Ranfft sense) · 1 calibersBased-on star (WatchBase sense) · 4 calibers
100%overlaydrag to pan · ⌘/ctrl + scroll to zoom · hover a caliber to isolate its line
ébauche ofébauche ofébauche ofBM 12800 (Buren 1280) — open caliber pageBM 12800 (Buren 128…1962maker not sourced1 exec · grade ?Bulova 12EBA (Buren 1280) — open caliber pageBulova 12EBA (Buren 128…1965maker not sourced1 exec · grade ?Buren 1280 — open caliber pageBuren 12801962Buren1 exec · grade ?Dugena 1280 (Buren 1280) — open caliber pageDugena 1280 (Buren 128…1962maker not sourced1 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
BM 12800 (Buren 1280)ébauche of
lineage
Buren 1280staged—
Bulova 12EBA (Buren 1280)ébauche of
lineage
Buren 1280staged—
Dugena 1280 (Buren 1280)ébauche of
lineage
Buren 1280staged—

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/20191021145237/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&BM_12800
    archivetier 2retrieved 2019-10-211 fact on this page
  2. 2
    Internet Archive
    https://web.archive.org/web/20230906013954/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&Bulova_12EBA&
    archivetier 2retrieved 2023-09-061 fact on this page
  3. 3
    Internet Archive
    https://web.archive.org/web/20230907001040/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&Dugena_1280&
    archivetier 2retrieved 2023-09-072 facts on this page
  4. 4
    Internet Archive
    https://web.archive.org/web/20230907001152/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&Dugena_1281&
    archivetier 2retrieved 2023-09-071 fact on this page
  5. 5
    Internet Archive
    https://web.archive.org/web/20230907001315/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&Dugena_1282&
    archivetier 2retrieved 2023-09-071 fact on this page
  6. 6
    Internet Archive
    https://web.archive.org/web/20230907001431/http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&Dugena_1320&
    archivetier 2retrieved 2023-09-071 fact on this page