What’s actually in a CALIBRE report – and how to read it

Every CALIBRE report now shows its full working, not just a number. Where the card’s full measurement trace is available, the report carries the actual charts, the actual photos, and the actual figures the rig used to reach the grade – not a summary of them, and not a redraw for effect.

The overall grade

Front and centre: the overall grade, its tier, and the four subgrades behind it – Centering, Corners, Edges, Surface. The overall grade is the weakest of the four, not an average. A single soft corner can’t be blended away by three clean faces.

Corner profiles – reading the deviation charts

Each corner is measured against a fitted arc: the ideal, undamaged curve for that corner’s radius. The chart plots the actual measured edge against that arc across the full 90° sweep of the corner. Green means there’s slightly more material than the ideal arc at that point (excess); red means less – rounding, a soft corner, a chip. A flat line sitting on zero is a clean corner. The “dev” figure underneath gives the full range in millimetres, smallest to largest deviation measured.

What the engine saw

Below the charts, that same fitted arc and measured outline are drawn directly onto a real crop of the card’s own corner and edge photos – not a diagram standing in for them. What you’re looking at is the exact curve the rig measured, on the exact photo it measured it from.

Edges

Each of the four edges is checked for dings (count, and the largest one found, in mm) and whitening – surface stress along the edge, visible under UV. A clean edge shows zero dings and no whitening, stated plainly underneath its crop.

Centering

The printed border is measured on both axes and shown as a simple diagram: how the actual border splits left-to-right and top-to-bottom, as a percentage. 50/50 is perfect centering – the further from that, the more off-centre the print.

Surface

Every mark the darkfield scan actually detected is listed – type, size, and how confident the detector was, for each one. Nothing is summarised into a score with no detail behind it. If nothing was found, the report says so plainly.

Why show all of this

Because “trust the number” isn’t good enough for something you’re paying to have measured. Every chart on a CALIBRE report is the same data the grade was actually built from.

See a real example: CLBR-0000743.