Good hint, Karl! I will try that method next time (if not forgotten till then).
For bending I use a pliers with brass tips similar to this one:
Bending in the caliper is questionable in my eyes, as it is stress for the rivet.
Finally, none of my calipers are used any more: now I test in the...
Voltage drop of a diode is dependent on the current flowing (according an e-function). If you have the nearly zero current of your tester only, you will get too low figures.
You should test voltage drop with a current similar to that of the driven quartz motor.
However with this adapter and the tiny 357 you lost a lot of capacity / running time. I suspect, this pricey adapter contains nothing more than the schottky diode (<$0.05) that David mentioned above.
his reply was, he uses "Parallels" for Windows programs, but an external microphone only works via an USB soundcard.
Unfortunately I cannot help further, as I do not use Mac computers (except my Iphone).
But also with recent Windows computers it became tricky to persuade a mic input...