Barr & Stroud. IR18 mark II, Quality thermal imaging Barr & Stroud. ARG-4, Ultra-hard anti-reflection coating for germanium, Wiper-proof * weather-proof * wear-proof Barr & Stroud. Infra red telescopes Barr & Stroud. Reliability and maintainability engineering department, Product support group, Outline of services available on contract Barr & Stroud. Lithium niobate crystals Barr & Stroud. Product Support Group Barr & Stroud. Developments, Passive night telescopes CU17 and CU18 Barr & Stroud. Data sheet, Passive night viewing system CU19 Barr & Stroud. Germanium, For infrared optics Bryans aeroquipment limited. Instrument test equipment Bendix-Friez. Diverse meet apparatuur Bofors. 40mm Marineautomatkanone in Zwillinglafette, Beschreibung