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Length Calibration

Key Equipment List

  • Suite of environmentally controlled laboratories
  • Zeiss UMC 850 CMM
  • Hewlett Packard laser interferometer system
  • Hilger-Watts gauge block interferometer
  • Zeiss UMC600 Single Axis Measuring Machine
  • Tesa gauge block comparator
  • Federal long gauge block comparator
  • Zeiss 'OPAL' Single Axis Measuring Machine
  • Reference sets of angle gauges
  • Ball bar standards
  • Sphere plate standards
Measurement Range Best Measurement Uncertainty (sample)
Length 0 – 30 m ± 0.005 µm
Angle 0 – 360 degrees 30 secs
CMM 600 X 850 X 1200mm 2.8 + L/250 um (L in mm)

  • Angle gauges, precision
  • Angle plates, box angle plates
  • Autocollimator and angle dekkors
  • Balls
  • Clinometers
  • Cylindrical setting standards
  • Dial gauges, lever
  • Dial gauges, plunger
  • Gauge block accessories
  • Gauge block comparators
  • Gauge blocks (by comparison)
  • Gauge blocks (by interferometry)
  • Graticules
  • Indexing tables
  • Length bar accessories
  • Length bars
  • Levels, electronic
  • Levels, spirit
  • Measuring machines, horizontal and vertical
  • Measuring Tapes
  • Micrometers, depth
  • Micrometers, external
  • Micrometers, height setting
  • Micrometers, height setting riser blocks
  • Micrometers, internal
  • Optical flats
  • Optical parallels
  • Parallels, engineers
  • Plain gap gauges, parallel
  • Plain plug gauges, parallel
  • Plain plug gauges, taper
  • Plain ring gauges, parallel
  • Plain ring gauges, taper
  • Plain setting rings, parallel
  • Polygons
  • Receiver & position gauges, jigs, fixtures
  • Rotary tables and dividing heads
  • Scales, precision linear
  • Screw plug gauges, parallel
  • Screw ring gauges, parallel
  • Sine bars, centres, tables
  • Sine tables, compound
  • Squares, blade
  • Squares, block
  • Squares, cylindrical
  • Stage micrometers
  • Steel rule, engineers
  • Step gauges
  • Straightedges
  • Surface plates & tables
  • Tapes
  • Thread diameter measuring machines
  • Thread measuring cylinders
  • Vee blocks
  • Vernier gauges, calliper
  • Vernier gauges, depth
  • Vernier gauges, height

We can also offer a range of 2D and 3D measurements using tactile and/or optical probes, suitable for non-standard gauges or products produced by AM or SM methods.
These measurements include roundness, squareness, parallelism etc.
Also available are structural features such as porosity, density, volume.

Rory Hanrahan
NSAI National Metrology Laboratory,
Glasnevin,
Dublin 9 Ireland

T +353 1 808 2611
F + 353 1 808 2603
E rory.hanrahan@nsai.ie