Fig 1Dial indicatorHover to slide the carriageblock 1 · reads 18.0 u
Plunger and needle: what moves when the height changesThree gauge blocks, 18, 14 and 10 tallSlide the carriage under the probe. The probe, needle and readout share one model. Values in u are illustrative SVG model units, not calibrated measurements; one turn represents 20 u.