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3 100 RUB
841 UAH
20 pieces

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Stopwatch SOSpr-2b mechanical (SOSpr2b, SDRN 2b)
To measure time in minutes, seconds and fractions of seconds.
Included in the recommended list of equipment for service for the public inspection of vehicles in 2011.
Mechanical Two-Button Stopwatch SDRN-2b is used to measure time in minutes, seconds and fractions of seconds.Can also be used in research and in timing.
Timing mechanism caliber 42mm at 16 jewels is a spring motor, anchor and move the oscillating system "balance sheet - spiral" with a period of oscillation 0.4.
The duration of one full winding of at least 18 hours.
To control the timing mechanism arrows SDRN-2b is provided with a special device summing action.Pusk, ostanov strelok osuschestvlyaetsya nazhatiem na zavodnuyu golovku, vozvrat na nul - nazhatiem na knopku.
The stopwatch has a 60-second scale with scale interval 0.2 s and 60-minute counter with a scale division of 1 min.
Housing stopwatch metal, chrome plated.
Technical characteristics of the devices stopwatches SDRN-2b middle button mechanical:
Gauge mechanism (mm)
The device is a mechanical balance of the instrument stopwatch Two-Button SDRN-2b
The capacity of the scale:
second, (c)
minute (min)
Class accuracy of the instrument mechanical stopwatch SDRN-2b Two-Button
Margin of error in the position of crown up or dial up when measuring the time interval 60 minutes:
at 20 ° C-within, (c)
in the range of operating temperature in the range (s)
± 1,8 with
± 5,4 with
Operating temperature range device stopwatch SDRN-2b Mechanical Two-Button, (° C)
-20 º C. .. +40 º C
Period podzavodki stopwatch in continuous operation, (h)
Working time (hours)
not less than 18 hours
Overall dimensions stopwatch Mechanical Two-Button SDRN-2b (mm)
no more 55h19h76mm
Weight stopwatch (kg)
no more than 0.15 kg
The average full-time service (years)
not less than 15kg
The content of precious metals in the device mechanical stopwatch Two-Button SDRN-2b: silver (g)
0,045 g
To ensure the highest level of service, purchase price stopwatch which will pleasantly surprise you.
In order to buy a stopwatch Mechanical Two-Button SDRN-2b contact our sales department.

Photos Stopwatch SOSpr-2b

SOSpr-2b device image.
SOSpr-2b device image.
SOSpr-2b front view.
SOSpr-2b front view.
SOSpr-2b rear view.
SOSpr-2b rear view.