Ø3 ropes for the pulleys of the third system, three pulleys (drawn in place) — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/ropes-3mm-third-system-pulleys-7-to-1/  (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 83.0, width 3.0, height 281.5
- Ø3 rope drawn along its working path (vertical strands and half turns in the sheave grooves): rope-1 435.66 mm; rope-2 272.83 mm; rope-3 196.42 mm. Ends plug into Ø3 sockets; a free end is the hauling part.
- Xem Studio design following Brown's figure; true size, no printing allowance (apply your own to the mating features).

dimension  value
rope  Ø3
length, rope-1  435.66 mm
length, rope-2  272.83 mm
length, rope-3  196.42 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. 21: figure, his text and an animation — web — Publisher's page; dimensions are facts — https://507movements.com/mm_021.html
- Xem Studio: drawing — web — Publisher's page; dimensions are facts — https://xemstudio.com/objects/third-system-pulleys-7-to-1-mechanism/

Free files (Xem Studio Design License, Xem Studio; STEP + STL, 3 parts): https://xemstudio.com/files/hardware/ropes-3mm-third-system-pulleys-7-to-1/index.json
API: https://xemstudio.com/api/geometry?object=ropes-3mm-third-system-pulleys-7-to-1