4 ms·
The DeWalt that I've been using recently had a bright green line pencil thin, in the sun, easily ten meters from the device. That's far enough to do an entire p
by dotancohen 4mo ago
The DeWalt that I've been using recently had a bright green line pencil thin, in the sun, easily ten meters from the device. That's far enough to do an entire patio - ten meters in each direction. I don't know about longer needs, such as sidewalks, but for building construction the DeWalt was excellent.
I've never tried other brands.
- rolph 4mo agothe really serious guys use GPS based equipment, and its serious stuff, being able to center up on a 1/64 inch brad tacked into the asphalt. [that 50,000$ ufo on a tripod by the highway, dont try to steal one, man do they ever know exactly where they are] yeah i like team yellow too :) the beam spread is what you want to check out if your serious about > 100 ft distance https://www.gpsalaska.com/ https://www.gpsalaska.com/ ^ this is a very commercial website, but example of higher end equipment and technique
- srean 4mo agoHow do you calibrate the GPS
- rolph 4mo agothere is a sattelite network, and a terrestrial reference station infra
- srean 4mo agoYeah but how do we know there distances accurately
- rolph 4mo agousually laser ranging is used to establish a baseline, rather than using a theodolite and chain like OG surveyors. the rest is trigonometry, withe the GPSS defining points relative to the baseline. https://www.gps.gov/trilateration https://www.gps.gov/trilateration https://apps.dtic.mil/sti/html/tr/ADA165932/index.html https://apps.dtic.mil/sti/html/tr/ADA165932/index.html https://app.studyraid.com/en/read/15241/528230/determining-distances-with-triangulation https://app.studyraid.com/en/read/15241/528230/determining-d...