Governor head: Ø16 × 14 collar with forked ears, pivots 28 mm apart — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/governor-head-16-ears-14/  (sheet CC BY 4.0; files Xem Studio Design License, https://xemstudio.com/license/)
Basis: Xem Studio design following Brown's figure (1868); true size, no printing allowance
Catalog version: 2026-10-20

Overall (mm): length 38.0, width 16.0, height 14.0
- Ø16 × 14 collar fixed to the Ø8 spindle with forked ears (two 5 mm cheeks each side) holding the arms' Ø3 pivot pins 14 mm from the axis.
- Xem Studio design following Brown's figure; true size, no printing allowance (apply your own to the mating features).

dimension  value
collar  Ø16 × 14, Ø8 bore
pivots  2 × Ø3, 14 mm from the axis
ears  forked, 5 mm cheeks

Files elsewhere (not hosted by Xem Studio; license as stated by the publisher):
- Henry T. Brown (1868, public domain): Five Hundred and Seven Mechanical Movements — scan on archive.org — web — Publisher's page; dimensions are facts — https://archive.org/details/fivehundredseven00browiala
- 507movements.com: Brown's movement No. 161: figure, his text and an animation — web — Publisher's page; dimensions are facts — https://507movements.com/mm_161.html
- Xem Studio: drawing — web — Publisher's page; dimensions are facts — https://xemstudio.com/objects/flyball-governor-mechanism/

Free files (Xem Studio Design License, Xem Studio; STEP + STL, 1 parts): https://xemstudio.com/files/hardware/governor-head-16-ears-14/index.json
API: https://xemstudio.com/api/geometry?object=governor-head-16-ears-14