I would trust it that far for flat, square pieces of metal; not for an irregular shape with a rounded tip, mounted to an irregular rounded surface. For this use I’d want a steel ruler at minimum.
wouldn’t it be even better to measure the force the nose pushes with? it’s easy to quantify and the apparatus could be a fixed mount on the head - hook it up to a raspberry pi which reads out a list of questions, records the answer and the nose output for further analysis!
Metric tape is good to ~1mm +/- 0.5 in my experience.
I would trust it that far for flat, square pieces of metal; not for an irregular shape with a rounded tip, mounted to an irregular rounded surface. For this use I’d want a steel ruler at minimum.
wouldn’t it be even better to measure the force the nose pushes with? it’s easy to quantify and the apparatus could be a fixed mount on the head - hook it up to a raspberry pi which reads out a list of questions, records the answer and the nose output for further analysis!
There are certainly a number of accurate measurement techniques. I simply mentioned my personal minimum.