Barr & Stroud. Developments, Passive night telescopes CU17 and CU18 Barr & Stroud. Data sheet, Passive night viewing system CU19 Barr & Stroud. Germanium, For infrared optics Ordnance B.L.4.134-inch (105 m/m) field ; ordnance Q.F. 4.134-inch (105 m/m long range field ; uitg. door Vickers-Armstrongs, Limited Ordnance Q.F.105 m/m (4.134-inch) 35-calibres on split trail carriage ; drawings and descriptions ; uitg. door Vickers-Armstrongs, Limited 40 mm 2 Pdr. automatic gun - 50 cals / Vickers-Armstrong Ltd barr and stroud height and rance finder 2m74 (9-ft.) base, type U.B.2A. on mounting type m.h. A.A. predictor equipment gun junction box A.A. Predictor equipment main junction box Training receiver for Vickers anti-aircraft fire control gear Elevation receiver for Vickers anti-aircraft fire control gear Vickers anti-aircraft fire control gear : general considerations