Metrology
Metrology
MaraMeter 844 NH Self-Centring Dial Bore Gage
EN
Product features
  • Measuring head consists of a carbide-tipped moving anvil and an interchangeable stationary anvil which has a carbide ball
  • Transmission lever system transfers movement of the movable anvil to indicating instrument
  • The broad centering bridge ensures automatic centering in the bore
  • Insensitive to temperature due to both the shank and transfer rod being made from heat resistant Invar steel
  • Highly resistant to wear and tear due to the carbide tipped moving anvil
  • Constant measuring force due to built-in spring thus eliminating user influence
  • Universally applicable and extremely versatile as every instrument spans a broad measuring range, within this range it is quick and easy to adjust to any size
  • Measuring head, holder, extensions, right-angle attachments and depth stops are all part of this extensive modular system
  • The comparision between Invar and Standard steel

    Invar steel has a particularly low expansion coefficient and thus makes the instrument totally insensitive to any kind of heat. Body heat from the user, increases in ambient temperature have no influence on the measuring results

  • Technical data

Order no.Product typeMeasuring range mmMeasuring range inchesDistance of movable anvil_mmRepeatability fw (µm)Error limit Ge (µm)Measuring depth mm
4475000
844 NH
18 - 50
.7 - 2"
1.3 mm
0.5 µm
2 µm
115 mm
4475001
844 NH
35 - 100
1.4 - 4"
1.3 mm
0.5 µm
2 µm
148 mm
4475002
844 NH
100 - 250
4 - 10"
1.6 mm
0.5 µm
2 µm
230 mm
4475003
844 NH
250 - 400
10 - 16"
2.6 mm
1.5 µm
3 µm
336 mm
4475004
844 NH
400 - 800
16 - 32"
2.6 mm
1.5 µm
3 µm
336 mm
4475005
844 NH
250 - 800
10 - 32"
2.6 mm
1.5 µm
3 µm
336 mm