A field land survey light adapted for securement between a target and a prism. The light includes a hollow cylindrical housing having a forward end, a rearward end, an upper portion, and a lower portion. The light further includes a lens positioned within the forward end, and a backing plate positioned within the rearward end. A lamp is positioned within the hollow cylindrical housing. The lamp is adapted to project light through the lens of the housing. A first cylindrical coupling serves to secure the field land survey light to the target of a surveying apparatus. The coupling has a closed bottom end, an opened top end, and an interior surface. The closed bottom end is secured to the upper portion of the hollow cylindrical housing. A set of threads is formed upon the interior surface of the first cylindrical coupling. A keeper spring is secured to the closed bottom end of the coupling. The keeper spring serves to provide a biasing force to any element positioned within the coupling. A second cylindrical coupling serves to secure the field land survey light to the prism of a surveying apparatus. The coupling has a closed bottom end, an opened top end, and an interior surface. The closed bottom end is secured to the lower portion of the hollow cylindrical housing. A set of threads is formed upon the interior surface of the second cylindrical coupling. A keeper spring is secured to the closed bottom end of the coupling. The keeper spring serves to provide a biasing force to any element positioned within the coupling.
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