Leyburn electronic distance measurement (EDM) baseline

Baseline status

Suitable for use while certificate remains valid.

Reporting problems

Contact the Regional Calibration Officer (listed under the 'Contacts' heading) as soon as possible if any of the following information is incorrect or to report any problems with the baseline.


The Leyburn baseline is located within a scientific reserve (1/SP220298) situated approximately 10km northeast of the Darling Downs township of Leyburn. This site has restricted access.


The site is accessed from Toowoomba via the Toowoomba Karara Road and Rosenthal Boundary Road. Rosenthal Boundary Road has approximately 4.5km of formed gravel road and 2km of graded track. This road is a dry weather only and high clearance vehicles are recommended.


This site must be booked prior to use and a security key obtained from one of the business centres noted below. Contact one of the department business centres listed below to arrange bookings, payments and collection of security keys.


Type: 7 station Schwendener. Stations are concrete pillars housed in fenced enclosures.

Datum RL: The datum plane is based on reduced level (RL) 415.0 metres. Reduced levels for the stations are derived from Station 1 – Permanent Survey Mark (PSM) 199101.

Alignment: Base alignment is from Station 7 → 2. Offsets are negative to the left and positive to the right of the line viewed from Station 7.


Station # 1 2 3 4 5 6 7
PSM # 199101 199102 199103 199104 199105 199106 199107


  • The security key will not be issued until full payment for the range use has been received.
  • Instrument observations should commence from station 1.
  • Observation may be impacted by significant shade from neighbouring trees in the afternoon.
  • This site should only be accessed in dry weather.
  • The security gate at the southern entrance should remain closed at all times to restrict livestock movement. Respect the property of adjoining landowners and their livestock.
  • Ensure all gates are closed and pillar caps are placed on pillars prior to leaving the site.
  • For additional information regarding the use of this site and/or the calibration of measuring equipment, contact the Regional Calibration Officer.

Regulation 13 certificate


Regional Calibration Officer

Bob Jenkins
Department of Resources
203 Tor Street

Phone: (07) 4529 1310

Department of Resources (business centres)

203 Tor Street

Phone: (07) 4529 1200

1-3 Alfred St
ROMA  QLD  4455

Phone: (07) 4624 1500

Government Offices
1st Floor
Cnr Guy & Fitzroy Streets

Phone: (07) 4661 0200

42 Callandoon Street

Phone: (07) 4671 6100