UEDIN · 1158
Helicon. Nominal pitch: B♭.
Zoom with the + and − buttons, a double-click, a pinch, or Ctrl + mouse wheel.
Description
Circular bass. Technical description: Brass. Water-key. Valve type: 3 Périnet valves, bottom-sprung; alignment by key on piston. Repair History: One bottom valve cap a replacement. New main tuning-slide made by A.K.F. Wilson 1982. Mouthpipe has a tuning bit soldered in, probably not an original feature. Overall size: 1184; coil diameter 770 approx; bell 386. Bore: v.t.s. (1,2,3) all stuck but same as m.t.s. 15.8. Dia of mouthpiece receiver: m.r.t. 13.1 - 12.3. Inscribed on bell "1ST / CLASS / RIVIÈRE & HAWKES / 28 / Leicester Square / LONDON". Alignment keys on valve pistons worn. Usable pitch: In present state, plays at A4 = 440 Hz. Purchased by lender with mouthpiece (1794). Illustration references: World Wide Web picture at http://www.music.ed.ac.uk/euchmi/
Measurements
1184; coil diameter 770 approx; bell 386.