TillaMurphs Posted October 9, 2009 Share Posted October 9, 2009 We often see NGS datasheet recovery logs that say something akin to: “The mark is 9 feet above the road.” or “RM1 is 3 feet below the station mark.” Is there an easy way to verify these approximate height differences when we go to recover a mark? When the two points referenced are horizontally some distance apart, or have irregular terrain between them, we are wondering how to do this for comparing with previous recoveries or writing new ones. At work I sometimes use a Wild N3 optical scope to measure and compare up to 100 different points within a thousandth of an inch. I am looking for something at the other end of the spectrum: Is there is a simple, inexpensive, quick to use, handheld device or procedure that we could use to verify or make elevation comparisons accurate enough to verify elevation differences such as the 9 and 3 foot examples above? I am thinking that accuracy would only need to be in the ballpark of 1/3-of-a-foot over 30 feet horizontal distance or something like that. Thanks, Quote Link to comment
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