KELIBRON About KELIBRON
KELIBRON is a measuring lab that runs in your browser. Open the page and the bench has vernier, dial and digital calipers, outside, inside and three-jaw micrometers, and parts made to real sizes. You decide where to measure and how to hold the tool, read it yourself, and check the part against its drawing. There’s nothing to install and no account to make.
Practising the common mistakes
Let a caliper lean along the shaft and the jaws span a slanted line, so it reads larger than the part really is. Leave a chip on the part, or skip the zero check before you start, and the display still shows a number, a wrong one. Each of these mistakes has its own scene in the lab, and when you make one, the lab explains what threw the reading off.
For the reasoning, read the guides. To work up from first readings to pass/fail calls, follow a course. Every exercise comes with a full reenactment you can watch first and then follow step by step.
Where do the readings come from?
The lab has one set of measurement calculations, and both the reading and the pass/fail call come from it. If the jaws aren’t seated or the pose is off, it won’t give a verdict; it points to what’s wrong instead. The videos and captions quote the same calculations: when the digital caliper reads 32.02 mm on the Ø32 step, that figure was worked out on the spot.
Can you trust the guides?
The figures and rules in the guides were checked against what BIPM, NIST and China’s national standards platform publish. Anything said about the lab was checked against its code. Every guide has been audited line by line, and course guides by someone other than their author. The English and Chinese versions carry the same numbers and conclusions.
Can it produce an inspection report?
No. It’s a simulation, and its readings are for practice and teaching. The instruments and parts are modelled on common designs, and their data stay marked as drafts until a metrology review is done.
Who’s behind it?
I’m Tealun. I built KELIBRON and I keep it running. If something’s wrong or awkward to use, or you’d like to teach with it, write to me.