Icon Request :- Calibration, Calibrated, Calibration Warning and Calibration Levels

[ben700]

So when taking any measurement the system should be calibrated, and this can give a confidence in the measurement, so the water you drink can be checked with a system that's had a three point, two point or single point test; then in operation the readings from the sensor may indicate that the process of calibration is required;

So I want device to show is it calibrated hence i trust reading, then when I do the calibration am I doing single, double or triple point process, then as time goes by the re-calibration should be done so I get warning\critical and then a danger so asking for seven icons:-

Calibration:- As a category I guess also with bar so not-calibrated used on new devices
Calibration Levels :- three point, two point or single point
Confidence in Calibration:- Good, warning, error