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Proportional compass leg 160 × 14 × 5, pointed, 6.2 mm slot 100 long

What is a proportional compass leg? · Modern device · basis: Xem Studio design following Brown's figure (1868); true size, no printing allowance

Also called: proportional compass leg, reduction compass, compás de proporción, Reduktionszirkel

Exact dimensions. True size, with no printing tolerance added.

length
160.0 mm
width
14.0 mm
height
5.0 mm

Notes

  • 160 × 14 × 5 leg pointed at both ends with a 6.2 × 106 mm slot along its middle: the pivot slide block runs in it, so the ratio of the two point spacings can be set anywhere from 1 : 1 (pivot central) to about 5 : 1.
  • Xem Studio design following Brown's figure; true size, no printing allowance (apply your own to the mating features).

Proportional compass leg 160 × 14 × 5, pointed, 6.2 mm slot 100 long size chart

dimensionvalue
leg160 × 14 × 5 mm
slot6.2 mm, centres ±50
pointsboth ends

Where the files are

Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.

Henry T. Brown (1868, public domain)Five Hundred and Seven Mechanical Movements — scan on archive.orgwebPublisher's page; dimensions are facts
507movements.comBrown's movement No. 409: figure, his text and an animationwebPublisher's page; dimensions are facts
Xem StudiodrawingwebPublisher's page; dimensions are facts

Free files

★ Free files 1 parts. Xem Studio design: free to use, print and sell things from; not to be republished as files. Xem Studio Design License. index.json

proportional-compass-leg-160-slot6leg, z 0..5, slot along XSTEP · STL
Let your AI pull this. Add https://xemstudio.com/mcp to Claude, ChatGPT, Cursor or any MCP client (free, no account, one minute) and it can look up exact sizes, mating fits and free STEP/STL from every chat.
Set it up →

Plain text: sheet.txt · JSON: /api/geometry?object=proportional-compass-leg-160-slot6

Proportional compass leg 160 × 14 × 5, pointed, 6.2 mm slot 100 long, isometric render of a generated part
Render of proportional-compass-leg-160-slot6 from the free STEP; not to scale.

Fits with

Proportional compasses (sliding pivot in slotted legs), isometric render of a generated part
Proportional compasses (sliding pivot in slotted legs)4 sizes★ 1 file

Questions

What is a proportional compass leg?

160 × 14 × 5 leg pointed at both ends with a 6.2 × 106 mm slot along its middle: the pivot slide block runs in it, so the ratio of the two point spacings can be set anywhere from 1 : 1 (pivot central) to about 5 : 1.