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Stopwatch And Timer Calibration - China

price: 1.00 Dollar US$

Stopwatch and timer calibrations are perhaps the most common calibrations performed in the field of time and frequency metrology.

Hundreds of laboratories and metrology institutes calibrate many thousands of timing devices annually to meet legal and organizational metrology requirements.

There are three generally accepted methods for calibrating a stopwatch or timer: the direct comparison method, the totalize method, and the time base method.

The first two methods consist of time interval measurements that compare the time interval display of the DUT to a traceable time interval reference.

In the case of the direct comparison method, the time interval reference is normally a signal broadcast, usually in the form of audio tones.

In the case of the totalize method, the time interval reference is generated in the laboratory using a synthesized signal generator, a universal counter, and a traceable frequency standard.

The third method, the time-based method, is a frequency measurement.

It compares the frequency of the DUT's time-base oscillator to a traceable frequency standard.

Suin SF2002 stopwatch calibrator is an easy-operating and high-precision instrument that adapts the totalize method, which can calibrate electric stopwatches (405, 407, 408, 415/417), mechanical stopwatches and digital quartz electronic stopwatches.

It can not only calibrate one stopwatch but also several ones with several fixtures, which meet different requirements, just like below pictures shown.


Company Contact:


  • Phone: 8631183897147

  • Address: A-2, Optical Valley Park,No.99 Yuyuan Road, Luquan District,Shijiazhuang,050 200,China, Shijiazhuang , Hebei , China

  • Email: Email


Published date: April 28, 2026

  • Business Description: SUIN was founded in 1966, and has been concentrating on the development and manufacture of electronic test and measurement instruments.

    In 1990, SUIN developed the first DDS Arbitrary Waveform Generator in China.

    In 2004, the DDS Function/Arbitrary Waveform Generator obtained the free support of “National Science and Technology Small & Medium Enterprises Technique Innovation Award Fund” from National Science and Technology Ministry.

    In 2005, our DDS Function/Arbitrary Waveform Generators won National Important New Products Certificate awarded jointly by Ministry of Science and Technology, Ministry of Commerce, General Administration of Quality Supervision, Inspection and Quarantine, Ministry of Environmental Protection of P.R. China.

    SUIN has more than 140 employees including 40 technical experts and has sufficient equipments and devices to research, develop and produce electronic test and measurement instruments such as DDS Function/Arbitrary Generators, Pulse/Code pattern Generators, Spectrum Analyzer, time and frequency test instrument like Time Synthesizers, time difference measuring system, Frequency Standards, Digital Frequency Characteristics Analyzers, Digital AC Millivolt Meters, DC Power Supplies, Universal Intelligent Counters, Logic Analyzers, DMM and more.

    We have reliable quality management system and quality guarantee system and have acquired ISO9001: 2000 International Quality Certification and most of our products have got approval CE and RoHs certification.

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