Vickers-Armstrongs 75 m.m. Field Artillery Equipment Wechselstrom-Telegrafie-Einrichtung für Funkverbindungen WT 6 Fu : Allgemeine Beschreibung Afstandmeter voor scheepsgebruik Barr & Stroud. Infra-red materials Barr & Stroud. Cryogenic air supply unit QK4 Barr & Stroud. Laser rangefinder Barr & Stroud. Thermal imaging sensor head Barr & Stroud. Thermal imaging fire control systems Barr & Stroud/Lasergage. Helicopter infra red system Barr & Stroud. Pacesetters Barr & Stroud. chalcognenide glass type I, For optical elements in infra red systems Barr & Stroud. Data sheet, Passive night telescopes CU17 and CU18