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Notched roller Ø18 × 4, Ø3 bore, 24 V-notches

What are the rollers of a rolling parallel ruler? · Modern device · basis: Xem Studio design following Brown's figure (1868); true size, no printing allowance

Also called: notched roller, ruler roller, knurled roller, rodillo dentado, Kerbrolle

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

length
17.93 mm
width
17.93 mm
height
4.0 mm

Notes

  • Ø18 × 4 roller with 24 V-notches 0.85 mm deep round its rim (they grip the paper so the ruler rolls without slipping) and a Ø3 bore; two on one axle make the ruler roll parallel to itself.
  • Xem Studio design following Brown's figure; true size, no printing allowance (apply your own to the mating features).

Notched roller Ø18 × 4, Ø3 bore, 24 V-notches size chart

dimensionvalue
diameter18 mm
width4 mm
notches24 × 0.85 mm deep, 90°
boreØ3

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. 323: 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

notched-roller-d18x4-b3roller, axis Z, z 0..4STEP · STL
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Plain text: sheet.txt · JSON: /api/geometry?object=notched-roller-d18x4-b3

Notched roller Ø18 × 4, Ø3 bore, 24 V-notches, isometric render of a generated part
Render of notched-roller-d18x4-b3 from the free STEP; not to scale.

Fits with

Rolling parallel ruler (blade on two notched rollers), isometric render of a generated part
Rolling parallel ruler (blade on two notched rollers)4 sizes★ 1 file

Questions

What are the rollers of a rolling parallel ruler?

Ø18 × 4 roller with 24 V-notches 0.85 mm deep round its rim (they grip the paper so the ruler rolls without slipping) and a Ø3 bore; two on one axle make the ruler roll parallel to itself.