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Measuring Possibilities: Rate deviation, amplitude, beat error. Rate Deviation Measurement: the range of deviation is± 999 sec / day, precision 1.0 sec/day. Amplitude Measurement: Numerical display in degrees, resolution is 1°, measuring range:100° to 360°. Measuring for the Beat Error (frequency error): Numerical display in milliseconds. Resolution is 0.1 milliseconds; the measuring range is 0-9.9 ms. Measuring Position: 1 to 6 positions. Line Length：480 points. Language：Chinese, English, Japanese. Supply Voltage: Single-phase AC 100 V～240V ± 10% two-line. Display Dimensions：95*54 mm. Dimensions:185*120*40mm.
【Type】 No.1900 timegrapher is a precise mechanical watches tester.
【LCD Screen】 LCD screen shows the live digits of rate, amplitude, beat error,beat, parameters and lift angel.
【Easy to Use】 Easy to use for mechanical watch collection. This watch tester automatically calculates rate, amplitude, and beat error using readings from the microphone stand.
【Automation】 According to different watches, the instrument will automatically adjust the optimal signal level during the test.
【Application】 It’s a very worthwhile watch calibration tool for amateur watchmakers, watch manufacturers and watch technician.
