(c) Pocumtuck Valley Memorial Association, Deerfield MA. All
rights reserved. Contact us for information about using this
image. This device known as a "proximity fuze," or VT (variable
timing) fuse was produced by the Raytheon Manufacturing Company,
parts which were made in Greenfield, Massachusetts plant, during
World War II (WWII). It is a miniature radar set and is utilized
to detonate artillery and anti-aircraft projectiles in close
proximity to the target. Shown here is a complete variable
timing (VT) fuze assembly and a cut-away display model, which
shows miniature radio tubes. This technology was considered the
third most critical secret program of WWII and dramatically
tipped the advantage to the U. S. during the war.