Every edge of the base plate is assigned to a specific bell size. The red socket marks the place fo the smallest bell (f.e. piccolo trumpet). Clockwise from the red socket the bells becomes wider. Check it out on the following pictures.

What fits on Leitner4all

for example:
✓ Rotary valves: Bugle, B-Tr, C-Tr, Pic / Cup, Straight, Harmon, Straight-Pic / 3 Mouthpieces, Leadpipe for Piccolo.
✓ Perinet valves: Bugle, Bb-Tr, Eb-Tr, Pic /Cup, Straight, Velvet, Straight-Pic / 3 Mouthpieces, Leadpipe for Piccolo.
✓ Perinet valves: B-Tr, C-Tr, Cornet, Eb-Tr / Cup, Straight, Harmon, Straight-Pic / 3 Mouthpieces, Leadpipe for Piccolo.
✓ Bb-Tr, C-Tr, Pic1, Pic2. / Cup, Straight, Harmon, Straight-Pic / 2 Mouthpieces, 2 Leadpipes for Piccolo.
✓ baroquetrumpet, cornett, bullhorn, Pic / Silent Mute, Silent Mute Pic, arcs for different keys / 2 Leadpipes for different keys, 2 Mouthpieces.
✓ …

How to use Leitner4all

Carrying. Assembling. Enjoying.