Barr & Stroud. Developments, Passive night telescopes CU17 and CU18 Barr & Stroud. Data sheet, Passive night viewing system CU19 Barr & Stroud. Germanium, For infrared optics Barr & Stroud. IR18 Mark II thermal scanner barr and stroud height and rance finder 2m74 (9-ft.) base, type U.B.2A. on mounting type m.h.
