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    SSM     LAWLEY 27
    Alternate names : Map ref.: LAWLEY BG34 3.6
    APREF/NGCA codes: Database number : 102254
    Stamp name:      LAW 27 Date established :   01/03/1973
    Physical status : located (Ertech Pty Ltd) Phys. status date :  05/04/2023
    Physical type :    brass plaqueHatch cover type : metal
    Mark set in :        concreteAccess type : 2 wheel drive
    Geographical CoordinatesMGA2020 Coordinates
    Horizontal datum : GDA2020Zone :             50
    Latitude :     S 31 55 50.91456Easting (m) :   393665.395
    Longitude :  E 115 52 30.39651Northing (m) :  6466681.376
    Convergence :       -0 35 42.02
    Point scale factor : 0.99973945
    Coordinate date :       13/08/2018
    Horizontal method :   GNSS Survey NetworkCadastral connection : Exists
    Relative horiz. accuracy :       40ppm ** Estimated relative uncertainty to adjacent marks
    Positional uncertainty (m) : 0.017 (95% Confidence level)
    Error Ellipse
    Semi-major axis (m) : 0.018
    Semi-minor axis (m) : 0.017
    Azimuth of semi-major axis (deg) : 150 41 51
    ** Projection coordinates are calculated from the geographical coordinates detailed above
    Project Grid - PCG2020Perth Coastal Grid 2020
    Easting (m) :   55526.646
    Northing (m) :  365821.658
    Convergence :       0 1 51.28
    Point scale factor : 0.99999944
    Height Information
    Vertical datum :   AHD71Height type :          Orthometric
    Height (m) :         36.596Height date :          04/05/2000
    Established by :  Dept of Land Admin.State :                    Final
    Vertical method : Spirit LevellingVertical accuracy : 12rootK
    Derived GDA2020 ellipsoidal height (m) : 4.15N-Value (m) :          -32.446
    Geoid model :         AusGeoid2020
    ** Derived GDA2020 ellipsoidal height: h = H + N Interpolation :         Bi-Cubic
    Vertical datum :   GDA2020Height type :          Ellipsoidal
    Height (m) :         4.162Height date :          15/08/2018
    Established by :  Geoscience AustraliaState :                    Final
    Vertical method : GNSS Survey NetworkVertical accuracy : 0.026m
    Mark to hatch cover :  
    Mark to ground level : 
    RM Info** Warning: RM azimuths and coordinates are unverified
    ** Azimuth, distance and height difference are relative to main mark
    RM1 Phys. status : destroyed (Dept of Land Admin.) Date :   12/07/2005
    Phys. type :    spikeSet in : bitumen
    Azimuth :           0 28 40Type :   True azimuth
    Distance (m) :    3.041Type :   Horizontal
    Height diff. (m) : NoneType :   
    RM to GL (m) :   0.000
    RM2 Phys. status : destroyed (Dept of Land Admin.) Date :   12/07/2005
    Phys. type :    spikeSet in : concrete
    Azimuth :           349 20 33Type :   True azimuth
    Distance (m) :    2.709Type :   Horizontal
    Height diff. (m) : NoneType :   
    RM to GL (m) :   None
    RM3 Phys. status : located (Dept of Land Admin.) Date :   12/07/2005
    Phys. type :    cookes NailSet in : wall
    Azimuth :           229 28 0Type :   True azimuth
    Distance (m) :    3.409Type :   Horizontal
    Height diff. (m) : NoneType :   
    RM to GL (m) :   None
    RM4 Phys. status : destroyed (Dept of Land Admin.) Date :   12/07/2005
    Phys. type :    spikeSet in : bitumen
    Azimuth :           33 28 40Type :   True azimuth
    Distance (m) :    9.821Type :   Horizontal
    Height diff. (m) : 0.151Type :   Spirit Levelling
    RM to GL (m) :   0.000
    RM5 Phys. status : located (Vision Surveys) Date :   22/01/2018
    Phys. type :    lead plugSet in : kerb
    Azimuth :           20 55 25Type :   True azimuth
    Distance (m) :    6.489Type :   Horizontal
    Height diff. (m) : 0.133Type :   Spirit Levelling
    RM to GL (m) :   None
    RM6 Phys. status : located (Vision Surveys) Date :   22/01/2018
    Phys. type :    lead plugSet in : kerb
    Azimuth :           62 47 35Type :   True azimuth
    Distance (m) :    3.679Type :   Horizontal
    Height diff. (m) : 0.180Type :   Spirit Levelling
    RM to GL (m) :   None
    RM7 Phys. status : established (Dept of Land Admin.) Date :   12/07/2005
    Phys. type :    lead plugSet in : kerb
    Azimuth :           206 26 40Type :   True azimuth
    Distance (m) :    9.830Type :   Horizontal
    Height diff. (m) : 0.254Type :   Spirit Levelling
    RM to GL (m) :   None
    RM Position Information** Warning: RM coordinates should be verified prior to use
    ** Coordinates are calculated from reference observations
    ** Coordinate accuracies commensurate with related observations
    RM1
    Geographical CoordinatesMGA2020 Coordinates
    Horizontal datum : GDA2020Zone :             50
    Latitude :     S 31 55 50.81583Easting (m) :   393665.389
    Longitude :  E 115 52 30.39748Northing (m) :  6466684.416
    Project Grid - PCG2020Perth Coastal Grid 2020
    Easting (m) :   55526.673
    Northing (m) :  365824.699
    Height Information
    Vertical datum :   
    Height (m) :         No height available
    RM2
    Geographical CoordinatesMGA2020 Coordinates
    Horizontal datum : GDA2020Zone :             50
    Latitude :     S 31 55 50.82813Easting (m) :   393664.867
    Longitude :  E 115 52 30.37744Northing (m) :  6466684.032
    Project Grid - PCG2020Perth Coastal Grid 2020
    Easting (m) :   55526.146
    Northing (m) :  365824.320
    Height Information
    Vertical datum :   
    Height (m) :         No height available
    RM3
    Geographical CoordinatesMGA2020 Coordinates
    Horizontal datum : GDA2020Zone :             50
    Latitude :     S 31 55 50.98649Easting (m) :   393662.828
    Longitude :  E 115 52 30.29787Northing (m) :  6466679.134
    Project Grid - PCG2020Perth Coastal Grid 2020
    Easting (m) :   55524.054
    Northing (m) :  365819.444
    Height Information
    Vertical datum :   
    Height (m) :         No height available
    RM4
    Geographical CoordinatesMGA2020 Coordinates
    Horizontal datum : GDA2020Zone :             50
    Latitude :     S 31 55 50.64861Easting (m) :   393670.726
    Longitude :  E 115 52 30.60275Northing (m) :  6466689.621
    Project Grid - PCG2020Perth Coastal Grid 2020
    Easting (m) :   55532.068
    Northing (m) :  365829.847
    Height Information
    Vertical datum :   AHD71
    Height (m) :         36.747
    RM5
    Geographical CoordinatesMGA2020 Coordinates
    Horizontal datum : GDA2020Zone :             50
    Latitude :     S 31 55 50.71778Easting (m) :   393667.649
    Longitude :  E 115 52 30.48473Northing (m) :  6466687.459
    Project Grid - PCG2020Perth Coastal Grid 2020
    Easting (m) :   55528.967
    Northing (m) :  365827.718
    Height Information
    Vertical datum :   AHD71
    Height (m) :         36.729
    RM6
    Geographical CoordinatesMGA2020 Coordinates
    Horizontal datum : GDA2020Zone :             50
    Latitude :     S 31 55 50.85995Easting (m) :   393668.649
    Longitude :  E 115 52 30.52107Northing (m) :  6466683.091
    Project Grid - PCG2020Perth Coastal Grid 2020
    Easting (m) :   55529.919
    Northing (m) :  365823.338
    Height Information
    Vertical datum :   AHD71
    Height (m) :         36.776
    RM7
    Geographical CoordinatesMGA2020 Coordinates
    Horizontal datum : GDA2020Zone :             50
    Latitude :     S 31 55 51.20031Easting (m) :   393661.110
    Longitude :  E 115 52 30.22986Northing (m) :  6466672.532
    Project Grid - PCG2020Perth Coastal Grid 2020
    Easting (m) :   55522.264
    Northing (m) :  365812.859
    Height Information
    Vertical datum :   AHD71
    Height (m) :         36.850
    Cadastral Connection Fieldbooks
    DLI 93051
    DOLA 88989
    E.J HORLIN 1
    LG 115873
    LG 145347
    LG 145821
    Special Notes
    Unknown DateRM4, RM1, LAW27 & LAW26 RM4 are co-linear. HATCH IS UNDER SLAB SET IN BRICK PAVING.
    ATRF 2014
    GDA2020 coordinates are equivalent to ATRF2014@2020.0. ATRF2014 coordinates can be determined by application of the Australian Plate Motion Model. For general and technical information on GDA2020 see http://www.icsm.gov.au/gda2020 and ATRF2014 see http://www.icsm.gov.au/australian-terrestrial-reference-frame.
    View the graphic summary
    SSM     LAWLEY 27
    Alternate names : Map ref.: LAWLEY BG34 3.6
    APREF/NGCA codes: Database number : 102254
    Stamp name:      LAW 27 Date established :   01/03/1973
    Physical status : located (Ertech Pty Ltd) Phys. status date :  05/04/2023
    Physical type :    brass plaqueHatch cover type : metal
    Mark set in :        concreteAccess type : 2 wheel drive
    Geographical CoordinatesMGA94 Coordinates
    Horizontal datum : GDA94Zone :             50
    Latitude :     S 31 55 50.96338Easting (m) :   393664.391
    Longitude :  E 115 52 30.35769Northing (m) :  6466679.862
    Convergence :       -0 35 42.04
    Point scale factor : 0.99973945
    Coordinate date :       09/10/2000
    Horizontal method :   Geodetic-TerrestrialCadastral connection : Exists
    Relative horiz. accuracy :       20ppm ** Estimated relative uncertainty to adjacent marks
    Positional uncertainty (m) : 0.023 (95% Confidence level)
    Error Ellipse
    Semi-major axis (m) : 0.025
    Semi-minor axis (m) : 0.020
    Azimuth of semi-major axis (deg) : 154 0 0
    ** Projection coordinates are calculated from the geographical coordinates detailed above
    Project Grid - PCG94Perth Coastal Grid 1994
    Easting (m) :   55525.625
    Northing (m) :  265820.155
    Convergence :       0 1 51.26
    Point scale factor : 0.99999944
    Height Information
    Vertical datum :   AHD71Height type :          Orthometric
    Height (m) :         36.596Height date :          04/05/2000
    Established by :  Dept of Land Admin.State :                    Final
    Vertical method : Spirit LevellingVertical accuracy : 12rootK
    Derived GDA94 ellipsoidal height (m) : 4.222N-Value (m) :          -32.374
    Geoid model :         AUSGeoid09 V1.01
    ** Derived GDA94 ellipsoidal height: h = H + N Interpolation :         Bi-Cubic
    Vertical datum :   GDA2020Height type :          Ellipsoidal
    Height (m) :         4.162Height date :          15/08/2018
    Established by :  Geoscience AustraliaState :                    Final
    Vertical method : GNSS Survey NetworkVertical accuracy : 0.026m
    Mark to hatch cover :  
    Mark to ground level : 
    RM Info** Warning: RM azimuths and coordinates are unverified
    ** Azimuth, distance and height difference are relative to main mark
    RM1 Phys. status : destroyed (Dept of Land Admin.) Date :   12/07/2005
    Phys. type :    spikeSet in : bitumen
    Azimuth :           0 28 40Type :   True azimuth
    Distance (m) :    3.041Type :   Horizontal
    Height diff. (m) : NoneType :   
    RM to GL (m) :   0.000
    RM2 Phys. status : destroyed (Dept of Land Admin.) Date :   12/07/2005
    Phys. type :    spikeSet in : concrete
    Azimuth :           349 20 33Type :   True azimuth
    Distance (m) :    2.709Type :   Horizontal
    Height diff. (m) : NoneType :   
    RM to GL (m) :   None
    RM3 Phys. status : located (Dept of Land Admin.) Date :   12/07/2005
    Phys. type :    cookes NailSet in : wall
    Azimuth :           229 28 0Type :   True azimuth
    Distance (m) :    3.409Type :   Horizontal
    Height diff. (m) : NoneType :   
    RM to GL (m) :   None
    RM4 Phys. status : destroyed (Dept of Land Admin.) Date :   12/07/2005
    Phys. type :    spikeSet in : bitumen
    Azimuth :           33 28 40Type :   True azimuth
    Distance (m) :    9.821Type :   Horizontal
    Height diff. (m) : 0.151Type :   Spirit Levelling
    RM to GL (m) :   0.000
    RM5 Phys. status : located (Vision Surveys) Date :   22/01/2018
    Phys. type :    lead plugSet in : kerb
    Azimuth :           20 55 25Type :   True azimuth
    Distance (m) :    6.489Type :   Horizontal
    Height diff. (m) : 0.133Type :   Spirit Levelling
    RM to GL (m) :   None
    RM6 Phys. status : located (Vision Surveys) Date :   22/01/2018
    Phys. type :    lead plugSet in : kerb
    Azimuth :           62 47 35Type :   True azimuth
    Distance (m) :    3.679Type :   Horizontal
    Height diff. (m) : 0.180Type :   Spirit Levelling
    RM to GL (m) :   None
    RM7 Phys. status : established (Dept of Land Admin.) Date :   12/07/2005
    Phys. type :    lead plugSet in : kerb
    Azimuth :           206 26 40Type :   True azimuth
    Distance (m) :    9.830Type :   Horizontal
    Height diff. (m) : 0.254Type :   Spirit Levelling
    RM to GL (m) :   None
    RM Position Information** Warning: RM coordinates should be verified prior to use
    ** Coordinates are calculated from reference observations
    ** Coordinate accuracies commensurate with related observations
    RM1
    Geographical CoordinatesMGA94 Coordinates
    Horizontal datum : GDA94Zone :             50
    Latitude :     S 31 55 50.86465Easting (m) :   393664.385
    Longitude :  E 115 52 30.35866Northing (m) :  6466682.902
    Project Grid - PCG94Perth Coastal Grid 1994
    Easting (m) :   55525.652
    Northing (m) :  265823.196
    Height Information
    Vertical datum :   
    Height (m) :         No height available
    RM2
    Geographical CoordinatesMGA94 Coordinates
    Horizontal datum : GDA94Zone :             50
    Latitude :     S 31 55 50.87695Easting (m) :   393663.863
    Longitude :  E 115 52 30.33862Northing (m) :  6466682.518
    Project Grid - PCG94Perth Coastal Grid 1994
    Easting (m) :   55525.126
    Northing (m) :  265822.817
    Height Information
    Vertical datum :   
    Height (m) :         No height available
    RM3
    Geographical CoordinatesMGA94 Coordinates
    Horizontal datum : GDA94Zone :             50
    Latitude :     S 31 55 51.03531Easting (m) :   393661.824
    Longitude :  E 115 52 30.25906Northing (m) :  6466677.620
    Project Grid - PCG94Perth Coastal Grid 1994
    Easting (m) :   55523.033
    Northing (m) :  265817.941
    Height Information
    Vertical datum :   
    Height (m) :         No height available
    RM4
    Geographical CoordinatesMGA94 Coordinates
    Horizontal datum : GDA94Zone :             50
    Latitude :     S 31 55 50.69743Easting (m) :   393669.722
    Longitude :  E 115 52 30.56393Northing (m) :  6466688.107
    Project Grid - PCG94Perth Coastal Grid 1994
    Easting (m) :   55531.047
    Northing (m) :  265828.343
    Height Information
    Vertical datum :   AHD71
    Height (m) :         36.747
    RM5
    Geographical CoordinatesMGA94 Coordinates
    Horizontal datum : GDA94Zone :             50
    Latitude :     S 31 55 50.76660Easting (m) :   393666.645
    Longitude :  E 115 52 30.44591Northing (m) :  6466685.945
    Project Grid - PCG94Perth Coastal Grid 1994
    Easting (m) :   55527.946
    Northing (m) :  265826.215
    Height Information
    Vertical datum :   AHD71
    Height (m) :         36.729
    RM6
    Geographical CoordinatesMGA94 Coordinates
    Horizontal datum : GDA94Zone :             50
    Latitude :     S 31 55 50.90877Easting (m) :   393667.645
    Longitude :  E 115 52 30.48225Northing (m) :  6466681.577
    Project Grid - PCG94Perth Coastal Grid 1994
    Easting (m) :   55528.898
    Northing (m) :  265821.835
    Height Information
    Vertical datum :   AHD71
    Height (m) :         36.776
    RM7
    Geographical CoordinatesMGA94 Coordinates
    Horizontal datum : GDA94Zone :             50
    Latitude :     S 31 55 51.24913Easting (m) :   393660.107
    Longitude :  E 115 52 30.19104Northing (m) :  6466671.018
    Project Grid - PCG94Perth Coastal Grid 1994
    Easting (m) :   55521.243
    Northing (m) :  265811.356
    Height Information
    Vertical datum :   AHD71
    Height (m) :         36.850
    Cadastral Connection Fieldbooks
    DLI 93051
    DOLA 88989
    E.J HORLIN 1
    LG 115873
    LG 145347
    LG 145821
    Special Notes
    Unknown DateRM4, RM1, LAW27 & LAW26 RM4 are co-linear. HATCH IS UNDER SLAB SET IN BRICK PAVING.