Slide Caliper Bookmark

A Bookmark in the form of a fully functional Slide Caliper Ruler


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A Slide Caliper Rule in the form of a Bookmark.

This is fully dual functional and when not being used as a Bookmark can also be used to measure internal and external lengths or mark angles.

It consists of two parts; the main body and the slider blade.
The parts are printed separately than joined together by pushing the slider into the main body.
Graduations are in millimeters (mm), with intervals at 1, 5 & 10 mm.
Maximum length of the scale is 150mm with a usable Caliper length of 130mm.
Two jaws are provided one for external and one for internal measurements.
The head of the slider has a hole that can be used for hanging the Caliper or a centre marker.

Additionally, the head of the slider has both 90 degree and 45 degree angle marking corners.

Use a colour that ensures a good contrast with the graduations.
However, its possible to infill these with a colour after printing if desired.

Assembled dimensions : 71 (W) x 185.5 (L) mm

Materials and methods

Printer Details
Filament: PLA+ Grey (subject to contrast requirements).
Layer Height: 0.15mm
Infill: 100%
Build Adhesion: Skirt
No supports required.
Filament length: ~5.6m
Weight: ~17g

Print bed area: 131.7 (W) x 185.5 (L) x 4.5 (H) mm
Print time with these settings: ~ 2h 30m

The rule of the Caliper is a friction fit within the main body.

However, ensure that the edges of the rule and guides are free from obvious aberrations and if any are evident carefully remove with a blade or sanding paper.

Towards the tip of the sliding blade is a small dimple which is there to prevent the blade from being pulled out too far once fitted.

Ensure the parts are correctly orientated prior to assembly.

To fit the slider blade hold it close to the tip when inserting into the guides and apply a little forward pressure until the dimple is visible on the other side. Continue to carefully push the rest of the slider blade forward always apply the pressure close to the main body to prevent excessive bending and damage to the blade.

Sliding the rule the full length a few times within a body will smooth out any remaining high points and eliminate sticking.



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A494af6a8599280b54290e10e310625a?default=blank&size=40Eric Dunn added this to the Tools collection ago
Ebd03523eb3be8a4217b348992bc9319?default=blank&size=40Rachel Bennet created issue What about its weight? ago
166618d3c6092c9a2045c0eab41afd49?default=blank&size=40Amanda Pardo added this to the Practical Crap collection ago
11278f9f477753d354d202c6ad3821ac?default=blank&size=40chris published this design ago