Northumbrian half-long pipes (plurale tantum)
Bagpipe, bellows-blown: 2 stocks (a: single chanter / b: 3 drones in 1 stock)
A "modern" reconstruction [of the 1920s; ws] is described in Charlton; Also called Halflongs; NB¹ (plurale tantum): The term is also used when referring to 1 instrument only; NB²: ➺ Northumbrian pipes.
Meer, John Henry van der: Beitrag zur Typologie der westeuropäischen Sackpfeifen. In: SIMP I (Stockholm, 1969), p.110 (»Charlton).
Charlton, George V.B.: The Northumbrian bag-pipes. In: Archaeologia Aeliana 4;7 (1930), p.131-142 + plates XXXI-XXXV.
Podnos, Theodor H.: Bagpipes and tunings. Detroit, 1974 (half long pipe [sic]), p.18.