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Mahr - Self-Centering Bore Gages 844D

Features
  • Measuring the diameter, roundness and conicity of bores
  • Spring-loaded halves of measuring probe are split via expanding pin with precision lapped taper. This movement is transferred to indicating instrument
  • Maximum wear-resistance due to hard chrome plating. From 4 mm alternatively with carbide tipped available on request
  • Constant measuring force as a result of built-in spring thus eliminating user influence
  • Highly versatile, each gage covers a large range. Within the respective limits, quickly and easily adjustable to any size and any type of measuring application
  • Measuring probe, holder, depth extensions, right-angle attachments and depth stops are part of an extensive modular system
  • Changable for indicating gage; analog or digital
  • Measuring range 0.47mm to 18.60mm
 
 
 
 


Accuracy
 
Deviation of linearity

  • ≤ 2% measuring ranges 0.47 - 1.55 mm
  • ≤ 1% measuring ranges 1.5   - 18.6 mm
Repeatability
  • 1 μm manual measurement
  • ≤ 0.5% measurement with stand 844Kst and floating holder 844Kst






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