Comparison : Item # 12945, Rice Lake 10 Gram (g) ASTM Class 1 Individual Cylindrical Stainless Steel (SST) Weight
Item # 12945AC, Rice Lake 10 Gram (g) ASTM Class 1 Individual Cylindrical Stainless Steel (SST) Weight with Accredited Certificate
Item # 12961, Rice Lake 20 Gram (g) ASTM Class 1 Individual Cylindrical Stainless Steel (SST) Weight
Item # 12961AC, Rice Lake 20 Gram (g) ASTM Class 1 Individual Cylindrical Stainless Steel (SST) Weight with Accredited Certificate
Item # 12963, Rice Lake 30 Gram (g) ASTM Class 1 Individual Cylindrical Stainless Steel (SST) Weight