Not much has changed since the tuba patented September 12, 1835. Its valve system has been developed and perfected like any other brass instrument, and its size is growing the most, in line with the expectations of the outdoor brass band, wind band, military band to be as loud as possible.
For the outdoor performances, such as marching or asphalt shows, the instrument makers already had to find a solutions for the players, how to carry the heavy tuba while marching kilometers, or holding it by standing in an outdoor concert.
In the middle of the XIX. century (around 1850) the instrument maker, Stowasser made a marching instrument based on the tuba called “helicon”. The players plays this instrument in a way, that he carries it on his shoulder.