Sometimes it is to establish an operational set of software or documentation which will go out into field use.
The new camouflage patterns are scheduled to be put into field use by the end of 2013.
A lighter 5" barrel was offered in 1958 for field use.
These were usually unsuitable for field use and needed some kind of mounting.
The investigative test is currently done in a lab, but may have field use.
Binoculars designed for heavy field use, such as military applications, traditionally have used independent focusing.
Their field use was discontinued by the French Army after 1871.
As time goes on, it is likely that there will be dozens of additional indications for field use.
The T-13 was approved for field use, and several thousand were shipped to Europe.
Most accoutrements for field use are purely practical in nature.
