Instrument calibration

EDM calibration

Landgate maintains three Electronic Distance Measurement (EDM) instrument calibration baselines located at:

EDM Baseline software

The EDM instrument calibration software called Baseline enables users to calibrate their EDM instruments using one of three WA calibration baselines. An updated version of the calibration software is released every two years after the re-calibration of the EDM instrument baselines. Re-calibration was last completed in July/August 2019.

To ensure you use the most up to date version of Baseline download the latest Distribution Version 2019.8.5.0 with Application Version ensuring the most recent baseline calibration file (Curtin 2019, Busselton 2019 or Kalgoorlie 2019) is used. The software runs on Windows OS (32 and 64bit). If you have issues running the software after install, try re-installing in a new directory.

Note: Baseline software source code is available for developers on GitHub.

EDM calibration booking sheets

Curtin University GNSS testing facility

The Curtin University GNSS test network consists of 5 concrete pillars that are regularly horizontally and vertically coordinated to monitor stability.

The aim of the GNSS test network guideline [PDF 0.5MB] is to encourage all surveyors to take a uniform approach when testing their GNSS equipment so the results obtained provide a reliable validation of user systems.

The GNSS testing facility is available at Curtin University, Kent Street, Bentley, 24hrs 7days a week.

Digital levelling system (Bar coded staves)

A barcode staff calibration range has been established on the Land Surveyors Licensing Board's examination site at Boya and consists of two observing pillars and a series of 21 stainless steel pins set in a solid granite outcrop. Landgate will regularly monitor and remeasure the test range to ensure its ongoing accuracy and stability.

Landgate barcode calibration data processing service

Landgate now offers a staff calibration data processing service to ensure staves are calibrated using the latest range data. This service replaces the previous downloadable user processing “Staff” software application. Landgate will process your raw observations and supply a calibration certificate.

There is no charge for this service.

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Need help?

For more information contact a member of the Survey Services team on +61 (0)8 9273 7111 or email

This page was last updated on: 01 Apr 2021