Izikrini ze-Trommel zinikeza isixazululo esilula, esisebenza kahle, nesongayo ukuze kuthuthukiswe inhlobonhlobo yezinto zokwakha kanye nokwandisa izinyathelo zenqubo yokululama elandelayo.Le ndlela yokuhlola isiza ukunciphisa izindleko zokusebenza nokutshala izimali kanye nokwandisa ikhwalithi yomkhiqizo kuyilapho ivumela ukucutshungulwa kwevolumu esheshayo nenkulu.Izikrini zethu ze-Trommel zakhiwe ngezinto ezisezingeni eliphezulu, ezidizayinelwe ukusebenza okuphezulu, amanani okukhiqiza aphezulu, izindleko eziphansi zokusebenza, nokunakekelwa okuphansi.