Part-number registers

Ward-Beck's own numbering for parts and sub-assemblies, gathered from drawing title blocks and file names, with the modules each item is used in.

• Circuit boards (SA14-nnn) — 64 items, 64 with known parent modules
• Input transformers (60-n) — 18 items, 9 with known parent modules
• Mechanical parts (A 9xxx) — 16 items, 0 with known parent modules
• Output transformers (70-n) — 8 items, 2 with known parent modules
• Power transformers (80-n) — 34 items, 12 with known parent modules
• Sub-assemblies (n-nnn) — 44 items, 33 with known parent modules