You can buy these with a calibration certificate for like $70, but I skipped the cert. Should be the same quality, cost me $16. I chose the version with the superior units of measurement.
You can buy these with a calibration certificate for like $70, but I skipped the cert. Should be the same quality, cost me $16. I chose the version with the superior units of measurement.
That loosy-goosy end is there for a reason: it gives the right reading when hooked on the outside of an object and is pulled out, but also when put on the inside (of a corner, for instance) and is pushed in.