Because Ordnance Survey uses OS Net does this mean that all their mapping products are/should be positionally accurate to 20 mm?
No. Our various mapping products are produced to a number of defined specifications, and whilst the accuracy of the data we collect is constantly improving, this does not mean that our various mapping products follow the same specification. For raster products, the scale of the map along with techniques such as cartographic generalisation means that feature representation at the 20 mm level is not possible.
