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Which timing machine are you using? Then you can't get an answer to your question as it's an invalid question. Unless a course I am totally misunderstanding your question then it may be a valid question. So first Link talks about mechanical watch testing And it explains how amplitude is measured. Quartz watches can be found in the second link. Unless of course and there were a few of these there were some quartz watches with a balance wheel. But as the balance wheel isn't driven by the escapement for the most part there may be an exception to that you have no way of measuring the amplitude. It is possible the timing machine is picking up the width of the stepping motor pulse confusing that with what it needs to pick up for amplitude and giving you a number. So typically a timing machine for quartz watches is entirely different than a mechanical watch timing machine. Although you can get timing machines that will do both. Then the problem with the ladies watches or any quartz watch without a second hand is that it does not step once per second. Especially on the ladies watches to save power they will step at a much longer time interval. http://www.witschi.com/assets/files/sheets/Test and measuring technology mechanical watches.pdf http://www.witschi.com/assets/files/sheets/Knowledge Quartz Watch.pdf