A complete manual and catalogue data pack is available for the BCA
A pair of Mk. 3 BCAs in their factory paint finish, mounted on the correct stands and surviving with all small fittings and complete and unaltered. Typical of the type that would have been bought by a toolroom or Government research station, they would have been ordered with a full set of accessories and doubtless enjoyed a leisurely life.
One of the very best BCA Mk.3 examples to emerge in recent years was this example advertised on eBay in March, 2021
Original maker-supplied equipment: "Lorch Long" collet set 1/32", 1/16", 3/32", 1/8, 5/32, 3/16, 1/4 (x2), 3/8" and, also collet-mounted, Lushington No.0 and No 1 boring heads and a CAV drill chuck