While I donít have a timegrapher, the benefit of having the Hairspring app (which calculates spd by microphone) is that you get a rough idea of where your watches are at. I ran all 5 watches through it today and found the results to be closely representative of what I observed in daily wear.
The only watch that doesnít hack (and thus difficult to pinpoint) was my 1950s Elgin Deluxe(17 jewel, adjusted to 4 pos.) so I put it through the app and found it to be nearly -150 spd dial up. The funny thing is that itís +180 spd dial down, which I guess cancels each other out and made it a decent watch to wear. Itís not bad as is, but in a case like this what would be the problem and what kind of service would decrease such a large spread?