Spin2 Help

Search ASCM by Adjacent Markers

Allows the user to search for Alberta Survey Control Markers (ASCM) by retrieving up to six adjacent markers from a specified ASCM number as shown in the adjacent marker information for the existing ASCM ID card.

ASCM Number - 2 to 6-digit numerical value assigned to identify the marker

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).

Enter the required "ASCM From" number then search; ASCMs are returned in a search summary results grid.

Note: If required, click the "Printable List" icon to create a list of all search results returned to the grid.

Under "View" click a "View Full ASCM" icon to retrieve an individual ASCM ID card or click the "View on Map" icon to locate the ASCM on the Alberta Map.

Note: Multiple ASCM ID cards may be added to the shopping cart for checkout (maximum 250 per cart), 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.

Note: ASCM information, made available through the Spin System, is not guaranteed or supported by the Spin2 Help Desk. For support, contact Geodetic Control Unit - Alberta Environment and Parks (Telephone: 1-780-422-1291 or Fax: 1-780-427-1493).

For more detailed explanations of ASCM information see the Alberta Survey Control Products Manual.