This is a diagram comparing five leadpipes of different profiles and with different lengths

eg Leadpipes marked 'A 200' are the 'A' profile with a length of 200mm

This is applicable to the following instruments

C Trumpets
E-flat Trumpets
E-flat Cornets
Tenor Horns
Soprano Fanfare Trumpets (default = H200)
Melody Fanfare Trumpets (Default = H200)
Herald/Cavalry Trumpets (Default = B200)
Post Horns (default = H200)