The Scout Service's Portable Radiation Imaging System (or PRIS Binoculars) is still anachronistically called "field glasses" by most Scouts, but the PRIS has many more capabilities than the old style binoculars.
The PRIS can be set to observe images in the spectral range from infrared to gamma rays. The front surface of the PRIS is transparent to all radiation; just behind it is a series of lenses tailored to various specific bands.
A laser range finder gives an accurate reading on the target within sight up to about 20km, depending upon conditions. The range is displayed as a digital readout in the viewfinder. The PRIS also has a built-in clock and limited memory, so that it can determine the velocity of the object being viewed by comparing its distance from the observer over time.
The unit can be calibrated to a standard self-precessing gyrocompass, in which case the bearing of the direction viewed will be digitally displayed in the corner of the viewfinder.
It also has a standard data port, allowing capture of the viewfinder as digital images on a standard hand-comp or other data storage system.
The magnification strength of the PRIS is adjustable up to 225x. A built-in flywheel for gyroscopic stabilization insures a steady field of view at all magnifications.
Besides its obvious used in the field, the PRIS also finds itself used in a variety of industrial and engineering applications. Its infrared images can be color coded to show the ambient temperatures of objects in the viewfinder. A PRIS can therefore be found near every jump drive, to be used by the engineers looking for "hot spots" on the drive housing. In other areas of the ship, the PRIS can detect problems in electrical circuits, again by finding an area of higher temperature.