This No.1900 timegrapher is a precise mechanical watches test instrument, it is used for multi-testing by watch manufacturers and watch technician.

Features:
The frequency diagram of the watch can be displayed on the LCD screen.
According to different watches, the instrument will automatically adjust the optimal signal level during the test.
The instrument will automatically calculate the rate deviation, amplitude, be-at error, and display them by the data in real time; select "±99.9s/d" at item rate ranges for result display, which can make the accuracy of rate deviation up to 0.1s/d.
For the conventional be-at, the instrument can automatically respond; for the special be-at, can manually select.
The sampling period can be selected by 2 seconds, 4 seconds, 6 seconds, 8 seconds, 12 seconds, 20 seconds, 30 seconds, 60 seconds, and the average value of corresponding period will be regarded as the precise value of the watch.
Six kinds of testing positions can be adjusted, and the simulation sound can be played in the speaker or mute.

Specifications:
Main material: ABS
Supply Voltage: AC 100V-240V 50/60Hz
Measuring possibilities: rate deviation, amplitude, be-at error of mechanical watches and diagram recording of the be-at noise.
Rate deviation measurement:
Measuring ranges: ±999s/d or ±99.9s/d
Resolution: 1.0s/d or 0.1s/d
Amplitude measurement:
Measuring ranges: 100°~360°
Resolution: 1°
Measuring of the be-at error:
Measuring ranges: 0.0~9.9 ms
Resolution: 0.1 milliseconds
Lift angle:
Measuring ranges: 30°~70°
Default value: 52°
Measure positions: 1-6 positions
Line length: 480 points
Measuring times periods: 2/4/6/8/12/20/30/60 seconds
Language: Chinese, English, Japanese
Display: color LCD graphic monitor, 480*272 pixels
Working environment: 10℃~40℃
Relative humidity: 0~80% RH
Item size: 185 * 120 * 40mm / 7.3 * 4.7 * 1.6in
Item weight: 337g / 11.9ounce
Package size: 230 * 210 * 195mm / 9.1 * 8.3 * 1.6in
Package weight: 1379g / 3.0lb

Automatic:
The following beat numbers are selected by automatic selection mode：12000、14400、18000、19800、21600、25200、28800、36000、43200。
（If the tested beat is not in automatically selection, the instrument will display the closest beat number, but the test result is not correct. At this time, use the manual mode to select the relative beat.）

Manual selection：
It can selected out the beat number that Automatic select can not identify and rare beat number.
The following beat are selected by Manual selection mode:
3600、6000、7200、7380、7440、7800、9000、9100、10800、11880、12000、12342、12480、12600、13320、13440、13500、14000、14040、14160、14200、14280、14400、14520、14580、14760、14850、15000、15360、15600、16200、16320、16800、17196、17258、17280、17786、17897、18000、18049、18514、19332、19440、19800、20160、20222、20944、21000、21031、21306、21600、25200、28800、32400、36000、43200。

Package list:
1 * Timegrapher
1 * Timegrapher Sensor
1 * Adapter (US/UK/EU/AU)
1 * User Manual