Smiths Oil Pressure Brass Feed Pipe Block Union / Adaptor CAM6431 & Washers 2K4936.
British made brass oil feed pressure pipe block with flat face union and two sealing washers for Smiths and other gauges, see my eBay shop for this with a conical union.
Threads standard 1/8 inch BSP (British Standard Pipe Thread) and 1/8 inch TBSP (Taper British Standard Pipe Thread) at the engine block end.
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