The nocturnals sold by the professional instrument-maker, of which some seventeenth-century specimens survive, were turned from hard-wood.
Izixhobo zokuthekelela iengile yomgama kwiMeridiyeni kumntla okanye umzantsi womgca wombindi (Genator) eziye zithengiswe ngabenzi bezixhobo abaqeqeshiweyo, Ezinye ezazenziwe ngenkulungwane ye17 zisekho kwaye zazenziwe ngemithi eqinileyo.