http://microstationtips.com/survey-foot-versus-international-foot-whats-the-difference/ Time-saving MicroStation Tips and Tricks Wed, 30 Nov 2011 17:24:19 +0000 hourly 1 http://wordpress.org/?v=3.3.1 http://microstationtips.com/survey-foot-versus-international-foot-whats-the-difference/comment-page-1/#comment-280 Margaret M. Maher Tue, 26 Apr 2011 21:32:50 +0000 http://microstationtips.com/?p=223#comment-280 As Joe Feyder comments, this is a huge issue. The difference between International Feet and U. S. Survey Feet in California StatePlane FIPS 0405, which includes Los Angeles County is about 13.25 feet. In Michigan, using the custom Michigan Georef coordinate system, the offset is nearly 250 feet when coordinates are calculated using the U. S. Foot vs. the International Foot, and the difference is multiplied by the False Easting and False Northing values for these coordinate systems. As Joe Feyder comments, this is a huge issue. The difference between International Feet and U. S. Survey Feet in California StatePlane FIPS 0405, which includes Los Angeles County is about 13.25 feet. In Michigan, using the custom Michigan Georef coordinate system, the offset is nearly 250 feet when coordinates are calculated using the U. S. Foot vs. the International Foot, and the difference is multiplied by the False Easting and False Northing values for these coordinate systems.

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