{ "snippet": "", "summary": "", "accessInformation": "", "thumbnail": "", "maxScale": "NaN", "typeKeywords": [], "description": "Global Positioning System (GPS) satellite navigation validation marks are unique visible markers located at a number of public boat ramps and associated jetties, which mariners or owners of portable GPS units can use to validate their position and map datum settings.\n\nLicense: Creative Commons Attribution\n\nTags: GPS, Validation Mark\n\nContact: sharon.hu@transport.wa.gov.au", "licenseInfo": "", "catalogPath": "", "title": "GPS Validation Mark (DOT-031)", "type": "", "url": "", "tags": [], "culture": "en-US", "portalUrl": "", "name": "", "guid": "", "minScale": "NaN", "spatialReference": "" }