Pawl for the 24-tooth Ø40 ratchet, pivot to nose 26.87 mm — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/lever-pawl-24t-d40-lower/  (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 30.87, width 8.0, height 6.0
- 6 mm pawl with a Ø8 boss on a Ø3 pivot and a nose whose end face lies on the steep face of a ratchet tooth over 80 % of its depth (face contact). Pivot to nose 26.87 mm; one of the two pawls of the double-pawl lever (pivots at (12, 20) and (12, -17) from the fulcrum).
- Xem Studio design following Brown's figure; true size, no printing allowance (apply your own to the mating features).

dimension  value
thickness  6 mm
pivot  Ø3
pivot to nose  26.87 mm

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. 206: figure, his text and an animation — web — Publisher's page; dimensions are facts — https://507movements.com/mm_206.html
- Xem Studio: drawing — web — Publisher's page; dimensions are facts — https://xemstudio.com/objects/double-pawl-lever-ratchet-mechanism/

Free files (Xem Studio Design License, Xem Studio; STEP + STL, 1 parts): https://xemstudio.com/files/hardware/lever-pawl-24t-d40-lower/index.json
API: https://xemstudio.com/api/geometry?object=lever-pawl-24t-d40-lower