Who deals with mechanical watches, which feels the urge sooner or later after a time scale. So a device reveals whether a clock is right or not – fast, and more importantly: the current “health” a clock can be very well established.
According to localtimezone, a professional time scale calculates the following values:
Amplitude: The amplitude is specified in degrees. Not Celsius, not Fahrenheit – but angles. A healthy clock has wound between 260 and 290 degree deflection of the balance. This drops dramatically, in some locations the camp defective for single-sided speaks. The value is generally low, the clock requires a revision. Often enough then a simple “oil change”, but often also the exchange of the tension spring is worth to give the old energy of the clock. A high amplitude-more than 310 degrees-in favour of bouncing. This is more force on the inhibition than necessary. The ellipse stone on the balance wheel, which operated the anchor, can take damage and break.
Variance: The variance measures a time scale in seconds per 24 hours. It is interesting to see how this deviation changes in the different layers – depending on gravity. As a general rule when the regulate the rule of thumb, to achieve an easy operation by two to three seconds in these locations.Deviations of more than 15 to 20 seconds the other values such as the amplitude and beat error should be considered carefully, to encircle the problem.
Waste: The waste or waste error will be called in milliseconds measured. In this case, it may refer to a Unsynchronizität of the half balance vibration. In a perfect world of watch, the balance wheel in both directions swings exactly the same number of degrees. The measuring of the drop determines whether the end stop of the balance spring has to be adjusted. In the best case it is waste error 0.0 ms, up to 0.3 ms are tolerable, from 0.5 should be adjusted in any case. Precision tolerances are often already significantly improved when the waste is properly adjusted.
These three readings are needed to decide about whether a watch is healthy. No action at an amplitude of 280 degrees when fully wound, a deviation from a drop of 0.2 ms, 5 seconds and 24 hours is required – it goes well the clock.
At an amplitude of 220 degrees when fully wound, there is a definitely need a deviation of 25 seconds to 24 hours. In this case, some bearing of the clock will be dry and require lubrication. Should the clock as longer run, real damage such as brake PIN is much higher.
Professional time scales cost much money – the models of the Swiss manufacturer Witschi are the Crown of creation here. Cheaper, devices from China are the Timegrapher, above all. These time scales are copies of affordable devices by Witschi, offer all important measured values and cost around 200 euros.Considering, the cost of rare collectors watches a drop on the hot stone! The models of Weishi, with which I could make so far no experiences come also from China.
The development of Tickoprint is located in Germany. The name was used for real time scales, indicated by a strip of paper was printed on the chart over the course.Today, Tickoprint is an app for – current solely – Android smartphones. The idea is good, and I got a test setup of the manufacturer consisting of a microphone with clip and a small amplifier. The amplifier needs a USB power port, the microphone is connected to the amplifier and a phone cable connects the amplifier tablet or Smartphone. Then can be measured immediately. Mobility and rapid Setup devices that has every watch collectors usually also in the budget is practical. Apple users, however, must renounce even the app.
Quick notice that the results are strongly dependent on the watch case. The massive, clockwork is packed, the signal quality is worse. No measurement can be taken in silent movements and including some fell in the test series. Much silence is also required – during a test on a watch Exchange in a noisy Hall were to achieve any usable results with the equipment provided. For comparison apps for the iPhone (kello and Timegrapher) at least a direction for the gear values could identify meanwhile also under fair conditions.
Under laboratory conditions, however, well reflected the Setup app with amplifier and delivers similar values as the Timegrapher time scale. Loud movements such as the Unitas caliber in Panerai Watches are very well recognized during the ETA Valjoux 7750, a classic of the works not in all cases will be detected correctly. Here comes one of the most important factors to bear: while a structure-borne noise microphone is used in a fixed time scale which reads out the sound waves, the Tickoprint solution uses yet a simpler microphone, which is rather intended for the audio range. Also the signal above the Crown is recorded at a professional time scale – this component is directly connected to the movement through the Crown shaft and transmits the sound perfectly. Therefore, the strength of housing and other factors are not as important as in Tickoprint. A “bare” movement is easily measured as a clock without a housing bottom. But is a little contrary to the thesis, the Tickoprint especially for the hobbyists is intended. Practically though is the ability to create individual records to the watches. Images and data are saved together with the accuracy. However these features are not available in the basic version available, here must therefore be upgraded for money in the play store.
However, The approach is excellent with a mini computer such as a Smartphone and to upgrade as a time scale. Details can be improved with other microphone technique and is a holder of a watch can be clamped in the, sure much more possible. At the end we the cheaper and with highest reliability solution win – price decline of professional time scales “Made in China” so against engineering “Made in Germany” with even more hits in the test than in the past.