Ø3 rope for the blocks and tackle, two sheaves in each block (drawn in place) — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/ropes-3mm-blocks-and-tackle/  (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 261.5
- Ø3 rope drawn along its working path (vertical strands and half turns in the sheave grooves): rope 904.9 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  904.9 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. 14: figure, his text and an animation — web — Publisher's page; dimensions are facts — https://507movements.com/mm_014.html
- Xem Studio: drawing — web — Publisher's page; dimensions are facts — https://xemstudio.com/objects/blocks-and-tackle-mechanism/

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