Mouthpiece drill (smallest point of MP). - A
Smallest lead pipe diameter. (where the receiver and LP join?) - B
Instrument bore (valve bore/slide bore?). - C
A 8.84mm
B 12.7mm
C 18.5mm
What's your combo and does it really matter?
Does size matter?
-
TubaBeage
- bugler
- Posts: 111
- Joined: Mon Jan 06, 2020 5:56 am
Does size matter?
Last edited by TubaBeage on Tue Apr 14, 2020 3:34 am, edited 1 time in total.
-
Donn
- 6 valves
- Posts: 5977
- Joined: Fri Aug 19, 2005 3:58 pm
- Location: Seattle, ☯
Re: Does size matter?
Mine's sort of roughly conical, so it's kind of complicated. How did you measure B?
-
TubaBeage
- bugler
- Posts: 111
- Joined: Mon Jan 06, 2020 5:56 am
Re: Does size matter?
With an internal caliper gauge pushed in from the MP end, so I did assume that was the smallest dia.