Marameter | Self-centering dial bore gage

Marameter 844 NH

Art. no. 4475002

Self-centering dial bore gage Marameter 844 NH
Measuring range mm 100 - 250 mm mm
Design: Standard, moveable anvil and stationary anvil carbide-tipped
Package contains: measuring holder, measuring head, anvil spindle, wooden case, excludes indicator

Marameter 844 NH
  • Measuring head consists of a carbide-tipped, movable measuring pin and an opposing interchangeable stationary counter probe with carbide ball
  • Movements of the measuring pin are transmitted to the indicating instrument via the ring segment
  • The broad centering bridge ensures automatic centering in the bore
  • Insensitive to temperature due to both the shaft and the transfer rod being made from Invar steel
  • Carbide-tipped measuring contacts for high wear resistance
  • Constant measuring force thanks to inbuilt measuring force spring. Measuring results are therefore independent of personal sense of touch
  • Universally applicable. Every instrument spans a broad measuring range. Within this range it is quick and easy to adjust to any size
  • Measuring head, measuring instrument holder, depth extensions, right-angle attachments, and depth stops form a comprehensive modular system
  • Invar steel makes the inner measuring device insensitive to temperature influences of any kind. Body heat from the user or a rise in ambient temperature in the workplace have virtually no influence on measuring results

Product type 844 NH
Measuring range mm 100 - 250 mm
Measuring range inch 4 - 10"
Distance of movable anvil_mm 1.6 mm
Repeatability fw (µm) 0.5 µm
Error limit Ge (µm) 2 µm
Measuring depth mm 230 mm
Dimensions a 11.5 mm | b 18 mm | c 230 mm | d 100 mm | e 25 mm |
Dimensional drawing 1

Variety of applications for our products

  • Measuring the diameter, roundness and conical form of a bore as well as the distances of parallel plane surfaces
Label Art. no. Product type Measuring range mm Depth of bore mm Clamping range in mm
4474052 Short holder
844 Ngk
4474052 844 Ngk
4474061 Measuring depth extension
844 Nv
4474061 844 Nv 100 - 250 mm
4474062 Measuring depth extension
844 Nv
4474062 844 Nv 100 - 250 mm
4474072 Right angle attachment
844 Nw
4474072 844 Nw 70 mm
4800122 Holder
420 h
4800122 100 - 220
4800123 Holder
420 h
4800123 100 - 420
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