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MarCal - The innovative Reference System
All Mahr digital calipers with this logo are equipped with the innovative Reference System. The zero position only has
to be set once: after setting the zero position, the zero remains stored for all further measurements. Therefore, once the caliper
is switched ON or the slide is moved the caliper is immediately ready for measurement. Once the caliper is initially set to zero,
there is no need to reset to zero each time the caliper is turned on.
Conventional
Switch ON Close the measuring jaws Set to zero Results of measurement
Switch ON Results of measurement
Press the or move the slide
ON key
IP Protection classes
First digit is the degree of protection Second digit is the degree of protection
according to IEC 60529 – against particles, according to IEC 60529 (approximate) –
contaminants and dusta against wet conditions (fluids)
0 Not protected 0 Not protected
1 Particles > 50.0 mm 1 Falling water drops - vertical
2 Particles > 12.5 mm 2 Falling water drops - tilted < 15°
3 Particles > 2.5 mm 3 Spray water < 60° Example
IP67 means that
4 Particles > 1.0 mm 4 Water splashing from all directions the product is
5 Dust protected 5 Water jets from all directions dust tight and
is protected
6 Dust tight 6 Powerful water jets against temporary
7 Temporary immersion in water immersion in
8 Continuous immersion in water water.
MarCal | Caliper 7
