  Parity is a key observable in nuclear spectroscopy. Linear polarization
measurements of $\gamma$-rays are a probe to access the parities of energy
levels. Utilizing the segmentation of detectors in the Segmented Germanium
Array (SeGA) at the NSCL and analyzing the positions of interaction therein
allows the detectors to be used as Compton polarimeters. Unlike other segmented
detectors, SeGA detectors are irradiated from the side to utilize the
transversal segmentation for better Doppler corrections. Sensitivity in such an
orientation has previously been untested. A linear polarization sensitivity $Q
\approx 0.14$ has been measured in the 350-keV energy range for SeGA detectors
using $\alpha$-$\gamma$ correlations from a \nuc{249}{Cf} source.
