Casgliadau Arlein

Brown card folder containing four technical drawings (three on tracing paper and one a copy) of contacts 2000.173/51(1) : brown card folder with inscription (see inscription field) overriding old inscription in biro. 2000.173/51(2) : contacts catalogue (orange cover loose) bound by metal fasteners containing technical drawings, numbered 1 to 136, of contacts on tracing paper. 2000.173/51(3) : technical drawing on tracing paper No 137 2000.173/51(4) : technical drawing on tracing paper No 138 2000.173/51(5) : technical drawing DRG NO SA/292 2000.173/51(6) : technical drawing BS-6086 2000.173/51(7) : technical drawing (no dimensions or ref.) 2000.173/51(8-13) : envelope marked 'M.E.B 4 COPIES' containing five photocopies: two of d.c. contactors, circuit breaker contacts, and two photocopies of maintenance for circuit breaker contacts.