Don't know if i'm missing something obvious here, but don't you have a tape measure?
Also, don't spend ages looking for a flexi-trumpet when you could just buy a trumpet and some flexihose, much easier.
Any local hosing or hydraulics specialist should be able to get you some flexi-hose in a suitable size/format. Same goes for electrical specialists and some suitable lamps tbh. Or there's the usual online options - demon-tweeks, spoox, etc.
Also, don't spend ages looking for a flexi-trumpet when you could just buy a trumpet and some flexihose, much easier.
Any local hosing or hydraulics specialist should be able to get you some flexi-hose in a suitable size/format. Same goes for electrical specialists and some suitable lamps tbh. Or there's the usual online options - demon-tweeks, spoox, etc.