Jordan Transverse Mercator (JTM) (Arabic: نظام تربيع ميركاتور الأردني المستعرض) is a grid system created by the (RJGC). This system is based on 6° belts with a Central Meridian of 37° East and a Scale Factor at Origin (mo) = 0.9998. The JTM is based on the Hayford ellipsoid adopted by the IUGG in 1924. No transformation parameters are presently offered by the government. However, Prof. Stephen H. Savage of Arizona State University provides the following parameters for the projection: Axis: 6378388 Flattening: 297 Prime Meridian: Greenwich Prime Meridian Longitude: 0 Units: Degree Units: Meter