The M4277M instruments are designed to measure current and voltage in DC circuits. The devices have an angular arrangement of the measuring mechanism, square faceplates and square housings.
The instruments can have measuring ranges with a zero mark inside or at the edge of the ranges. The instruments can be manufactured with other measuring ranges and with scales calibrated in units of any physical quantities.
Instruments are verified in accordance with the requirements of GOST 8.497-83. The dials and scales of the instruments are made in accordance with Din 43802.
M4277M are included in the State Register of SI of the Russian Federation No. 37282-17.
Interverification interval is 2 years.
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