BSF and Whitworth "Across the flats " sizes. | Model Engineer
US PRO By BERGEN 10 Piece WHITWORTH Combination Spanner Set 1/8" - 11/ – BERLIN TOOLS
BEDFORD SHORT TYPE WHITWORTH RING SPANNER3/8 X 7/16 - £4.99 : The Vintage Tool Company , We sell Tools and Toolkits for Veteran, Vintage, Classic Motor Cars, Motorcycles and Commercial Vehicles
British Whitworth BSW Combination Wrench Spanner 10pc 1/8 - 11/16W Bergen - AB Tools Online
8 Piece Whitworth Spanner Set - [SI-633967]
Melco TW14 Whitworth Box Spanner 7/16 x 1/2 x 125mm (5in) | Power Tools Direct
Whitworth Spanner 7/16" Eurotech - Robson's Tool King Store
Spanner Whitworth/BSF - 6 pieces Open End Set
The Classic Mechanic: MM, AF, BSW, BSF Spanner Conversion Chart
Spanner Set, Combination Whitworth, 8 piece
Clarke CHT817 8 piece Whitworth Combination Spanner Set - Machine Mart - Machine Mart