| Search ASCM by Tablet Marker |
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| Allows the user to search for Alberta Survey Control Markers (ASCM) using the actual number or marking stamped into the marker's tablet or cap, which is cross-referenced with the ASCM number. |
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| Tablet Marker - markers installed after circa 1987 usually reflect the ASCM number; markers installed before circa 1987 usually reflect the old ASC number (see ID Card description for details); markers not installed under the direction of Director of Survey (DOS) usually reflect the identifier adopted by the installing agency (National Geodetic Data Base (NGDB) number assigned by NRCAN) |
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Marker Condition - last reported physical condition of the marker; only markers meeting exact condition(s) chosen will be returned (marker conditions originally chosen remain selected until changed by the user)
- Installed - marker recently installed in the field (complete location description or field inspection report pending)
- Good - latest field inspection reported marker to be in good physical condition
- Anomalous - marker appears unstable as result of data processing by Director of Surveys (DOS), or by evidence reported by an Alberta Land Surveyor re physical damage or disturbance
- Destroyed - marker certified "physically lost" after a thorough search by an Alberta Land Surveyor
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Marker Type - general format of the ASCM ID Card Type; only markers meeting exact type(s) chosen will be returned (marker types originally chosen remain selected until changed by the user)
- Preliminary - new or recently installed marker with coordinates that have not been approved/adopted by DOS or coordinates/elevation for a published marker due to be revised by DOS
- Final - rural/urban markers that have been approved/adopted and published by DOS
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Card Format - ASCM ID Card produced formatted to either UTM or 3TM coordinates (card format originally chosen remains selected until changed by the user)
- UTM - Universal Transverse Mercator - mapping plane zone is 6 degrees wide (UTM central meridians in Alberta are 111 and 117 degrees west longitude)
- 3TM - 3-degree Transverse Mercator - mapping plane zone is 3 degrees wide for urban ASCMs and 2 or 4 degrees wide for rural ASCMs (3TM central meridians in Alberta are 111, 114, 117 and 120 degrees west longitude)
Note: For 3TM urban ASCMs the zone is 1.5 degrees wide on either side of the central meridian. For 3TM rural ASCMs the zone is 1 degree wide on either side of the central meridians of 111 and 117 degrees west longitude and 2 degrees wide on either side of the central meridians of 114 and 120 degrees west longitude (Alberta only). |
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| Enter the tablet number or marking then search; the ASCM is returned in a search summary results grid. |
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| Note: If required, click the "Printable List" icon to create a list of all search results returned to the grid. |
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| Under "View" click the "View Full ASCM" icon to retrieve the ASCM ID card or click the "View on Map" icon to locate the ASCM on the Alberta Map. |
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| Note: Multiple ASCM ID cards may be added to the shopping cart for checkout, upon checkout they will be combined into a single .pdf file format for download. If necessary, card format can be changed from the shopping cart by using the drop down menu. |
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| Note: ASCM information, made available through the SPIN System, is not guaranteed or supported by the SPIN 2 Help Desk. For support, contact Geodetic Control Unit - Alberta Environment and Parks (Telephone: 1-780-422-1291 or Fax: 1-780-427-1493). |
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For more detailed explanations of ASCM information see the Alberta Survey Control Products Manual.
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