While soldering a RJ-11 connector to get the data out I shorted the wires.
Surprisingly,some new letters appeared on the tiny screen.
I’ve uncovered some hidden functions!
Here’s the functions:
H – Hold
F – Fast Measurement (screen refresh at each change,way faster)
H M – Hold the further opened you get (could be useful for a momentum apparatus
Here’s a link if you want the exact same model:
Hackaday : http://hackaday.com/2011/01/12/hold-fast-and-max-features-on-a-digital-caliper/