Medjil - the Survey Instrument Calibration portal
Over the past two years our Geodetic team, in collaboration with other jurisdictions, has developed an online EDM calibration portal, known as Medjil to replace the old Baseline.exe software and Staff Calibration portal.
We are pleased to announce that Medjil is now fully operational and available online for calibrating EDMs and Levelling Staves. Landgate will no longer support the Baseline.exe software and the Staff Calibration portal is no longer active.
Medjil calibration procedures are based on published resources including technical specifications, scientific papers and ISO standards (e.g., Guide to the Expression of Uncertainty in Measurement). Medjil also addresses many recommendations from Baseline software reviews including user experience, internal register of instruments, record of instrument certifications and many more. Please refer to the Medjil technical manuals for and user guides for more information.
Medjil is fully compliant with the existing Landgate cyber security standards. If you have an account in Staff Calibration (portal) for calibrating levelling staves, you can login in directly without having to sign up as a new user. We also recommend the same users to update the make and model of levelling staves and level instruments in Medjil by clicking the Instrument Register under Dashboard. New users are requested to contact us to get the company code.
EDM baselines
EDM baselines
Regular calibration of EDMI is required under Regulation 20 of the Licensed Surveyors (General Surveying Practice) Regulations 1961. Instrument calibration ensures the distances measured are legally traceable back to the national and international standard.
Landgate maintains three EDM Baselines to ensure easy-access, reliability and consistency. Field calibration procedures and data processing instructions are provided in Medjil. Each EDM baseline consists of several stable concrete pillars that are accurately measured to determine certified distances at regular intervals or as required. Landgate is a Verifying Authority for verification of reference standards of measurement of length (on EDM baselines) accredited by NATA (National Association of Testing Authorities) and issues a Regulation 13 (of the National Measurement Regulations 1999) Certificate on these three Baselines every two years (or as required).
EDM baseline locations:
- Curtin University, Kent St, Bentley, 24 hours 7 days a week
- Kalgoorlie Explosives Reserve, Piccadilly St, 7am to 3pm, Mon-Fri. Booking required.
- Busselton Bypass 24 hours 7 days a week
Booking sheets:
The baseline locations and booking sheets can also be on Medjil.
Barcoded staff calibration at Boya
Landgate also maintains a Barcoded Staff Calibration Range facility located on the Land Surveyors Licensing Board's examination site at Boya (Darlington). The Staff Calibration Range consists of two observing pillars and 21 evenly spaced stainless steel pins set in a solid granite outcrop. The staff range is regularly measured using calibrated invar staves to ensure its accuracy and stability. Field calibration procedures, booking sheets, user guides and technical manuals can be found on Medjil.
GNSS testing facility
Landgate also provides a Global Navigation Satellite Systems (GNSS) testing facility located at Curtin University. The GNSS testing facility consists of 5 pillars that are regularly monitored (horizontally and vertically) to ensure highest accuracy and stability.
Landgate also provides this GNSS test network guideline to encourage a uniform approach to testing GNSS equipment.
The GNSS testing facility is available at Curtin University, Kent Street, Bentley, 24 hours, 7 days a week.