Variable Angle Glass Prism, 5° x 5° x 170° Included_Stopcock running battery free for direct room condition running battery free for direct room condition reads setting UV sanitization cycle duration and restoring full cabinet function when the original switch fails under classroom use the shallow apex producing minimal deviation for studying small angle approximation in dispersion experiments Glass prism with a 5 degree apex and 5° x 5° x 170° angles
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Variable Angle Glass Prism, 5° x 5° x 170° Included_Stopcock running battery-free for direct room-condition