Hand lever, 60 mm, Ø6 hub bore — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/hand-lever-60-bore6/  (CC BY 4.0)
Basis: Xem Studio design following Brown's figure (1868); true size, no printing allowance
Catalog version: 2026-10-20

Overall (mm): length 74.0, width 18.0, height 5.0
- 5 mm lever with a Ø18 hub bored Ø6 (fixed on the 20-tooth gear's shaft) and a Ø3 hole 60 mm out for a handle or link: rocking it turns the gear to and fro.
- Xem Studio design following Brown's figure; true size, no printing allowance (apply your own to the mating features).

dimension  value
length (centres)  60 mm
hub  Ø18, Ø6 bore
end hole  Ø3
thickness  5 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. 127: figure, his text and an animation — web — Publisher's page; dimensions are facts — https://507movements.com/mm_127.html
- Xem Studio: drawing — web — Publisher's page; dimensions are facts — https://xemstudio.com/objects/opposed-racks-and-pinion-mechanism/

Free files (CC BY 4.0, Xem Studio; STEP + STL, 1 parts): https://xemstudio.com/files/hardware/hand-lever-60-bore6/index.json
API: https://xemstudio.com/api/geometry?object=hand-lever-60-bore6