Bigger difference. I get 0.06500459 acre = 2831.6 sq feet.

If they said 30 feet, I'd laugh and explain it to them. When they said 300 feet, I might have started wondering about a typo. I've never seen my Gar...

What I said was "Standard errors are 1-sigma, not 95% confidence." I had interpreted a previous comment to say that you intended to put a 95% number ...

:good: My wife's workplace celebrates it because of a math major who used to work there. I think it's a bunch of nonsense just exactly because of the...

You might want to search this site for discussions with Scott Zelenak about techniques used at the WTC.See also [msg=162066]this thread[/msg].It's a s...

Temperature correction is almost universally 6.45 x 10^-6 per degree F, which means that 15 F change in temperature makes about 0.01 ft in 100.One mus...

[msg=189359]Old thread[/msg]

As I read the old textbooks, the tape was originally calibrated with some standard (non-zero) tension even when the tape is supported on a flat surfac...

Standard errors are 1-sigma, not 95% confidence.Offsets are not a repeatability problem - it will be systematic in every measurement.The AB+BC-AC test...

Distance error consists of several parts. You can check for offset error with the AB+BC-AC method. You can't check scale factor without a (fairly lo...

>exception of the rights of the state in maintaining the towerThat sounds like just acknowledging an easement while selling all rights in the prope...

Check what characters are allowed in the descriptive text. I've had reports rejected for that, although it's been a while and the message was differe...

I'd set my tribrach on a 2x4 or other fairly stiff item and level it. Then use shims to raise one end of the 2x4 until the bubble moves the required ...

Kent has a pointWe've heard some horror stories about fire hydrants. They are quite unstable vertically, perhaps slightly so horizontally, and do som...

There's a search box in the upper right corner just under the facebook, etc., icons. You can find lots of previous threads.

If you abut a monument to the sidewalk, then next time somebody rips out the sidewalk for utility work, handicap access ramp, or whatever, they will t...

Excel DDMMSS to Decimal DD.xxxxxx>1/1/2015 at 1600 hrs. I get 48' and change in Wahl's sheet, but 39' in MICA.I tried SPADE, another (old) DOS prog...

State Plane Coordinates were invented in the 1930's when good practice was to use a tape and transit, and they've been mentioned in textbooks for deca...