3/8 LH or RH, nonlock, keylock and thumbturn secure versions, all illustrated top of picture. No specific keep as standard, however commonly used with 3/8b keep, shown left.
3/9 catch, shown bottom, LH and RH. Satin chrome only. 3/9b bridge keep to suit, although often found on old Avdon sashes (with cord balances) without a keep, instead cam locates into a slot on outer sash rail. Locking version can be made by Cavendish; allen key-head screw is added to prevent turning action of arm / cam (special order).
Price (per item): £POA