Find out about equipment calibration requirements for licensed surveyors and how and where to calibrate EDM equipment.
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Requirements for licensed surveyors
Regulations 6(1)(a) and (b) of the Surveying (Cadastral Surveys) Regulations 2015 require a licensed surveyor to use survey equipment that has been compared to a standard of measurement. The process and basis of comparison must be adequate to obtain the accuracy required under the regulations.
Regulation 6(2) requires licensed surveyors to retain records of comparisons and make them available for inspection upon request by the Surveyor-General Victoria.
after every repair to all or part of such equipment
by comparison to a baseline approved by the Surveyor-General Victoria.
To help licensed surveyors calibrate EDM equipment, the Surveyor-General Victoria maintains an EDM calibration handbook, EDM calibration software and six EDM calibration baselines in Victoria.
The EDM calibration handbook
Please download the following documents for information on EDM calibrations:
To ensure readings from meteorological equipment used in EDM equipment calibration are comparable to the national standards for temperature and pressure, the recorded offset for the baseline standard must be applied as a correction.
These corrections are listed in the table below and must be included on the instrument calibration booking sheet.
Baseline
Temperature
Pressure
Bendigo
+0.3
+2.3
Braeside
-0.1
-0.1
Cowwarr
+0.1
+2.0
Geelong
0.0
+3.5
Hamilton
+0.3
+2.7
Mitcham
+0.6
+3.0
Table last updated 10/12/2024
EDM calibration software
To assist surveyors to calibrate EDM equipment against standard baselines, an EDM calibration computer program called Baseline (Version 6.0.0.5, July 2012) has been made available for public use by Western Australia's land information authority, Landgate. The Surveyor-General Victoria has adopted this software for calibrating EDM baselines and EDM equipment in Victoria.
Download the latest version of Baseline and distribution file for calibrating EDM equipment against Victoria's baselines:
Please extract zip file contents to a working directory before running the software.
The distribution file available from this link is updated annually following the re-verification of Victoria's baselines. The EDM Calibration Handbook and online help provide the user with the necessary instructions to run Baseline.
The new version of Baseline has been prepared to overcome difficulties running on 64-bit versions of Windows 7.
If you experience persistent runtime difficulties running Baseline on Windows 7, please contact geodetic survey.
Users who have obtained Baseline directly from Landgate must ensure they have the most up-to-date Victorian baseline information before reducing their results.
Pulsed Instruments and instruments with a unit length of zero
For pulsed instruments and instruments with a unit length of zero, the meteorological observations must be entered into the instrument at the time of the calibration.
The unit length, frequency and carrier wavelength are used in the calculation of the meteorological corrections and cyclic errors within the Baseline software. Surveyors can enter the instrument into the register and leave all the details blank, and the software will still process the data correctly.
Instrument parameter spreadsheets
The following spreadsheets list instrument-specific parameters to assist surveyors when using the Baseline software to calibrate EDM equipment.
Parks Victoria have requested that surveyors submit an internal job safety plan or safe work method statement for the planned work. Please email Braeside@parks.vic.gov.au for more information
Please note:
Equipment cabinet
The equipment cabinet is located next to Cockatoo car park on the West side of the toilet block within the Telford Picnic Area (see attached site access diagram and photos)
A key safe is attached to the cabinet. The combination lock code will be sent to you in the booking confirmation email.
Please do not remove the atmospheric sensor from the cabinet.
Please remember to return all the equipment inside, lock the cabinet and put the keys back in the key safe.
Job safety planning
Parks Victoria have requested that surveyors submit your internal job safety plan or safe work method statement for the planned work. Please email to: Braeside@parks.vic.gov.au
Park rules & safety
The baseline is open from 8.00am until 3.30pm, then the gates are locked.
Please abide by the speed limit of 20km/hr and be conscious of pedestrians enjoying the park. Hazard lights must always be used.
Please ensure vehicles remain on Cypress Drive and do not park on the grass areas.
Do not climb the electrified fence around the baseline, only climb through the two stiles provided.
Be aware of snakes, especially from late August to early May.
If you need to contact the park rangers, please call 13 19 63.
We appreciate your assistance in the ongoing operation of the Braeside EDM instrument calibration facilities.
EDM baseline address: Braeside Park, Lower Dandenong Road, Braeside Braeside Park Ranger's Office (03) 9265 7300
Controlling office address: Department of Transport and Planning Land Use Victoria Calibration Officer GPO Box 527 Melbourne 3001
The baseline is available for booking through the EDM Baseline Booking Page and there is no longer a need to go into the controlling office.
Please note:
All ancillary equipment is kept in a large metal 'umbrella box', installed up McGilvray Place at the back of St. Quentin Consulting. Press on the black key lock on wooden gate to open.
The combination lock code will be sent to you in the booking confirmation email.
Please remember to lock the box and return all the equipment.
Please bring cleaning supplies and wipe down the ancillary equipment before and after use (umbrellas, pillar cap key).
Please use flagging to mark any tree along the baseline that you think is restricting line of site sight for the local council arborist.
EDM baseline address: Forest Hill Linear Reserve Menin Rd, Forest Hill 3337
Baseline bookings
Bookings are required in advance to use the baselines.
Refer to individual baseline details for opening hours or closures.
Baselines are available for use on weekdays only.
Users are required to have their own copies of official booking sheets.
No rubbish is to be left behind.
All gates must be left in their original position.
Pillar caps are to be refitted upon completion.
When using non-standard prisms, sighting difficulties may be experienced between pillars. The same type of prism must be used for the observations to achieve a valid calibration.
Please bring cleaning supplies and wipe down the ancillary equipment before and after use (umbrellas, pillar cap key).
