MarTest | Test indicator

MarTest 800 SGA

Art. no. 4301250

Test indicator MarTest 800 SGA
Factory standard
Measuring range mm: ± 0.25 mm
Graduation value mm: 0.01
Package contains: spanner for changing the styli, stylus dia. ø 2 mm, mounting shaft 800a6 (800 SA/SGA/SGB), mounting shaft 800a8, test certificate, instruction manual, case

MarTest 800 SGA
  • High contrast dial face, sealed with an O-Ring
  • Mineral glass viewing panel for best protection:
    - against scratching or damage caused by hot shavings
    - optimal resistance to solvents
  • Matt chrome-plated protective casing with three integrated dovetail guide rails
  • Shockproof measuring mechanism
  • Anti-magnetic model
  • Automatic adjustment to the contacting direction ensuring infallible readings
  • Ball-bearing mounted double lever
  • Overload protection thanks to friction clutch
Measuring range mm ± 0.25
Product type 800 SGA
Graduation value mm 0.01 
Standard Factory standard
Figur on dial face 25-0-25
Range per rev. in mm 0.5 mm
Span of error fe (µm) 5 µm
Total span of error fges (µm) 8 µm
Measuring value hysteresis fu (µm) 3 µm
Partial measuring range ft (µm) 5 µm
Repeatability fw (µm) 3 µm
Measuring force 0.1 N
Scale diameter 38 mm
Dial color Yellow
Dimensions a 40.5 mm | c 13.6 mm | d 17.8 mm | e 75 mm | f 99 mm
Dimensional drawing 1

Variety of applications for our products

  • Measurement of concentricity, alignment, parallelism and flatness
  • Centering of bores and shafts
  • Parallel or perpendicular alignment of work pieces
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