Handheld GPS Surveying Units
There are several handheld GPS surveying units on the market. To avoid confusion as to which GPS surveying instrument to buy, first decide on the essential features you want and then go for additional features for further enhancement of your GPS experience. While the major player in the field of GPS surveying is Trimble, there are scores of other GPS vendors that sell handheld GPS surveying instruments. While Garmin is also one of the leading GPS vendors, it has no dedicated GPS surveying device. Instead, it offers some add-ons that can be used with its normal, low-priced GPS handhelds that help with surveying.
Trimble TSC2 Data Collector
The Trimble TSC2 features a full keyboard for controlling the GPS total stations located on-site. The piece operates on MS Windows Mobile OS facilitating sending and receiving documents on the go. Learning is easy with the easy-to-use interface. Primarily used for measurements and stakeout operations, this handheld GPS surveying unit can compute large data in split seconds and helps with modeling the surface thereby allowing the surveyor to create a precise map of the area under survey. Other features include a touchscreen, adjustable contrast with backlit LCD screen, 512 MB memory, 516 MHz processor, integrated WiFi, and Bluetooth for quick access to the Internet and local networks.
Garmin GB Discoverer
The Garmin GB Discoverer is basically an extension that is compatible with most of Garmin's GPS handhelds. Once you select any basic GPS handheld with navigation features (such as Dakota 20 and Oregon), you can get the Garmin GB Discoverer to help you with surveying, too. The module is a joint effort of Garmin and Ordnance Survey mapping that produces precise topographic maps in both raster and vector maps. All you need to do is to download the Garmin GB Discoverer to your GPS navigation handheld, preferably one from the Dakota series, to get unlimited maps of any area covering the entire UK.
In short, this means that Garmin offers you surveying as an additional capability to your existing GPS handheld, thereby avoiding the need to purchase a specific GPS survey handheld. You can use all the features of the Garmin GPS handheld such as the Lane Assistant or Golf GPS along with surveying facility.
Besides, you can spend some time on the Internet to study the different models and makes of handheld GPS survey unit available for sale, both new and used, thus saving on the costs.