~= 1607 oz.tr. 10 pwt.tr. 17 grain.tr. 4/5 grain.tr.
1 ztr = 1607.5371563253 oz.tr.
1 oz.tr. = 0.0006220696026 ztr
https://www.unitjuggler.com/convertir-mass-de-zentner-en-oztr.html