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86-21-64894034

exportdept@stopwatchsh.com

Shanghai Minhang District 2F, Building 6, No.1238 Xinyuan Road, Shanghai, China

How to choose a mechanical stopwatch

Maximum period to be metered: 15 minutes, 30 minutes, 60 minutes
Minimum timing scale to which accuracy is required: 0.2 sec., 0.1 sec., 0.02 sec., 0.01 sec.


For experimental, research and industrial use

Minimum timing scale:0.2sec.
Timing within 30 minutes JM-505   JM-806   JM-508   
Timing within 60 minutes JM-566   JM-866   


Short-range timing for teaching, sports

Minimum timing scale:0.1sec
Timing within 15 minutes JM-504   JM-803   
Timing within 30 minutes JM-533   JM-833   


Minimum timing scale:0.02sec.
Timing in 4 minutes JM-502   JM-802   


Minimum timing scale:0.01sec.
Timing in 2 minutes JM-501   JM-801   

Most mechanical stopwatches are used to record a separate period of time that is not interrupted, a single button stopwatch fulfils this need.
The two-button stopwatch builds on this by adding a pause function and a separate zero return button to avoid misuse.


Single-button stopwatch: the only button to control the three-step chronograph action of "start", "stop" and "return to zero", as well as the winding function.


Dual-button stopwatch/pause and safe-return-to-zero function: if you need to record time periods with intervals, a stopwatch with a pause function can meet your needs.:
The top button controls the "start", "stop" and winding functions, while the side button controls the "return to zero". The "return to zero" operation of the side button can only be successful when the hand is stopped, which reduces the possibility of misuse.


Dual-button flyback stopwatch: the top button controls the "start", "stop" and winding functions, while the side buttons control the "return to zero". In order to satisfy special cyclic timing needs, unlike ordinary dual-button stopwatches, the stopwatch in chronograph mode can also return to zero and start a new cycle of timekeeping at the same time as the side buttons are released.

Physics Teaching

JM-803   JM-504   


Experimental Timing

JM-806   JM-803   JM-505   


Mine Timing

JM-803   JM-807   JM-504   


1/5sec.

JM-806   JM-866   JM-505   JM-566   


1/10sec.

JM-803   JM-504   JM-833   JM-533   


1/50sec.

JM-802   JM-502   


1/100sec.

JM-801   JM-501   


Submarine Sonar

JM-520   JM-519   


Efficiency Rating

JM-508