In 1931, Rudall, Carte offered a variety of "modern flutes" (i.e. with cylindrical bores and parabolic heads): "old system", Radcliff, Gaurds' model, Boehm (normal and Rockstro's model), and Carte 1867 system. They still offer simple system conical flutes (with six open finger holes and five to ten keys, the ten-key flutes being a version of Siccama flutes). The term "concert flute" means the standard size flute (six-finger note D, or "in C" in modern terminology).
"Pitches in General Use" are given on page 3 as
Materials for flute bodies are surveyed on page 5. Silver is recommended for "people who do not play much". (The British had a strong preference for wood at this time.)
Of interest is that Rudall, Carte now offer, on page 10, "Copies of Old Original Recorders".
The entire catalog of Military and Orchestral Musical Instruments is 64 pages; we give only the flute section. Thanks to Joe Moir for the loan of his copy of this catalog.
