Need Help Reading Test Slips

[fishrising]

Hello, can someone please help me interpret the following test slips for a GMTII and a SUB?

(1) I'd like to know if, based on these tests, I should service either watch.

(2) Can someone please point to me a reference, or give me the rundown on the symbols on the "timing" test, as well as what position relates to what symbol?

(3) The GMTII seems to be keeping better time per the test, but in what position is the +008?

Thank you in advance!

[fishrising]

Anyone?

[C. Davidson]

For the first picture, top left:

The first column of pics looks like the different testing positions. As follows: Crystal up, Crystal down, crown down, crown left, crown up.

The next column would be the rate results in these positions.

The following or third column would be the amplitude (or degree of arc the balance makes) in these various positions.

Fourth column, I have no idea.

Fifth column: still no idea.

Sixth column: Rate results post 24 hours.

Seventh column: Amplitude post 24 hours.


For the second picture, top right:
Results for a pressure test at 5 bars, aka 50 meters. It passed!

*WARNING: Im no watchmaker, so the above is my best educated guess.

[watchmaker]

Whether or not you would have either watch serviced is at your own discretion. With that said, if I had those results I would definatlely say both watches need further attention.
The GMT has good(not great) timekeeping. A low(bad) amplitude. And the fourth column indicates beat error, which is reasonable here.

The sub, slightly worse timekeeping, better amplitude, worse beat error.

So I would say that both watches could do with professional attention.

[fishrising]

Thank you!

[rsmithor]

My vintage Pepsi GMT was repaired a few yrs ago (rotor stopped due to a loose screw) and i had it re-calibrated... here's a copy of the test slip...