====== Implementation Schemes of OSTN Grid Corrections =====

Orbit supports the OSTN Grid corrections as described by the Ordnance Survey. \\
Both OS Polynomial transformation xy and z grid corrections are supported. 

For download and configuration, see [[193:technology:core:crs|]].

===== EPSG 27700, OSGB 1936 / British National Grid =====

{{  technologies:crs:epsg_27700.png?nolink  |}}

===== EPSG 29903, OSNI 1952 / IRISH NATIONAL GRID =====

{{  technologies:crs:epsg_29901.png?nolink  |}}

===== EPSG 29903, TM75 / IRISH GRID =====

{{  technologies:crs:epsg_29903.png?nolink  |}}