The speed indicators ИО.3813-1 and ИО.3813-2

The speed indicators ИО.3813-1 and ИО.3813-2 are created for showing the following information about the operational parameters of automotive engineering: 

• The engine speed.
• The number of revolutions of power take-off shafts
• The theoretical speed of the tractor.
• Total engine operating time (maximum value is 9999)

There are two types of the indicators ИО by JSC "Izmeritel". They differ from each other with scales. The scale of the indicator ИО-1 shows the speed of two power take-off shafts and the scale of the ИО-2 shows the speed of one power take-off shafts.