I'm puzzled by the following. It seems to imply that "non-calibrated" strings are a good idea.
Steinberger double-ball strings have, as the name suggests, string balls at both ends of the string. This makes them ultra-easy to install on Steinberger instruments using the front-mounted tailpiece and headless tuning system.
The double-ball non-calibrated design ensures easy installation and contributes to the reputable Steinberger tuning stability. This particular Light-gauge pack is designed for Steinberger’s 6-string guitars. https://www.andertons.co.uk/steinberger-6-string-doubleball-guitar-strings-light
Here's a definition of calibrate
4: to adjust precisely for a particular function
5: to measure precisely
You would think that calibration is a good thing.
Is there some special meaning of non-calibrated when referring to guitar strings?