Who said gas mixers have to be unwieldy?

https://www.lt-gasetechnik.de/wp-content/uploads/2020/07/lt-gasetechnik-beitragsbild-default.jpg 878 494 Alexander Hanf Alexander Hanf https://secure.gravatar.com/avatar/db2b524fb591574d36b6f1c5af0218f7a6af4a228530c02a586d1be61f1d05c4?s=96&d=mm&r=g 24. July 2018 20. July 2020