Tag Info

GPS (wikipedia) is based on orbiting satellites and so is accurate worldwide. There are other similar systems in use or under development, run by other countries (Russia, China, India, and the EU), but the US GPS still works everywhere. This stick shadow method should work the same north and south of the equator. The constellation you should look for down ...

GPS systems can, and do, work everywhere you can get satellites. The coordinate system -- or datum -- you choose to use should vary (even in the US) depending on the maps you are working with, your project needs, the area you are working in, or what the legacy system you are dealing with... In the history of map-making, a ton of different projections and ...

You don't say what area specifically you're looking at, or what your budget is - but Anquet seems to do a number of electronic copies of standard OS maps for prices I wouldn't consider unreasonable here. Of course, if you mean the whole of the UK / Europe then the cost will be high, but I don't think there's really much getting around that. It unfortunately ...

If you really do need exceptional accuracy, you could use the solution many Ingress players use - a good Android phone with a battery pack. In the game you often need accuracy of 2 or 3 metres - so the Galaxy S3 or a phone paired with the Nexus 7 (which has an excellend GPS) are the tools of choice. The game uses google maps and wireless navigation, as well ...

I live in Sweden and I hike a lot in the wild. My personal top three properties to look for in a handheld GPS receiver for The Great Outdoors: Battery life Battery life Battery life I honestly don't care if the measurement is 20 metre off. In the Swedish mountains, it usually isn't, there are no deep canyons, and if there are you can only go in one ...

Below are some resources for US vector data. The links do provide gdb format downloads that will drop into a garmin for example. The format that you are looking for is a shapefile though. Those are the most standardized format for vector data sets but are very clumsy to work with. http://fsgeodata.fs.fed.us/vector/index.php ...

I probably wouldn't use regular epoxy. I have had trouble with it on rubber around water. When I am trying to reseal rubber I use silicone sealant or seal cement or Super under water epoxy. The seal cement is neoprene but it dries waterproof. Any one should work just fine it only depends on what you use the GPS for. Obviously the 3000 PSI rated epoxy ...

For compasses, it will depend on the model. You can get globally balanced compasses like the Suunto M3 Global, but Silva compasses (probably the most common in Europe) tend to be balanced for the Northern Hemisphere. As LBell says, they'll point the right way, but just won't work smoothly so you run the risk of taking inaccurate bearings. It's worth ...