Gem Measure
Live gemstone symmetry & distortion measurement
...Adjust the polygon by dragging its vertices to match the gem outline.
Read deviation percentages, symmetry score, and edge lengths directly on screen.
Calibrate (K) by clicking two points and entering their real distance (e.g., 5 mm) to switch to metric units.
Add rulers (M) to measure arbitrary lengths, dividing them into any number of equal parts.
Save results (S) or export a text report (E).