Strand Patt.45 is a manual Fresnel spotlight with a 4½ in short‑focus lens and slide focus for beam control from 14° spot to 45° flood. It has a pressed steel body with a hard hammer‑grey finish, side‑hinged rear access, and accepts a 5 × 5½ in millboard colour frame. Lamp options are 250 W or 500 W tungsten; throw is about 8 m with outputs listed as 3,750 cd (14°) and 21,120 cd (45°). Obsolete per Strand Luminaire Data (1991).