On Sunday 29 May 2005 12:03, James R. Frysinger wrote: > Surveyor's use the survey foot, which was just the plain ol' American > foot > before 1959. It equals (1200/3937) m and is about 2 mm/km longer than the > "new" foot established here in 1959. Surveyors do not divide this foot into > inches but instead measure down to the nearest hundredths of a foot. That > is a resolution of about 3 mm.
That's the precision of numbers on the map; but the accuracy of locating a house in the field with a total station is 0.1 foot, or 30 mm. The new GPS device which my boss bought to replace a damaged station has centimeter accuracy (and this is one of the rare times I've heard him say anything in metric), but locating a corner of a house is still, I think, going to be less accurate than locating an iron. Back to my question: since surveyors already use decimals, does that mean that they will be less confused by centimeters than clothing-makers are? phma -- lo nu punji lo sovda be lo cipnrkuku kukuku zvati lo zdani be lo na'e cipnrkuku kuku
