Lead-screw frame 120 × 40 with Ø6 bearings 94 mm apart and an 8.2 mm rail slot — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/lead-screw-frame-120-tr10x2/  (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 120.0, width 44.1, height 40.0
- 120 × 40 × 5 base with two 6 mm uprights bored Ø6 for the screw's journals (bearing faces 94 mm apart) and a 16 × 8 rail bar with an 8.2 mm slot that guides the nut-slide's foot; four Ø3.4 (M3 clearance) holes.
- Xem Studio design following Brown's figure; true size, no printing allowance (apply your own to the mating features).

dimension  value
base  120 × 40 × 5 mm
bearings  2 × Ø6, 94 mm apart
rail slot  8.2 × 8 mm, 110 long
holes  4 × Ø3.4

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. 103: figure, his text and an animation — web — Publisher's page; dimensions are facts — https://507movements.com/mm_103.html
- Xem Studio: drawing — web — Publisher's page; dimensions are facts — https://xemstudio.com/objects/lead-screw-and-slide-mechanism/

Free files (Xem Studio Design License, Xem Studio; STEP + STL, 1 parts): https://xemstudio.com/files/hardware/lead-screw-frame-120-tr10x2/index.json
API: https://xemstudio.com/api/geometry?object=lead-screw-frame-120-tr10x2