OIML是什么：
OIML是「国际法定度量衡组织（InternationalOrganizationforLegalMetrology）」的法文OIML的图标和联系方式简称，成立于一九五五年，其宗旨在提供并促进各国法定度量衡系统及量测仪器有一个共同的国际基础
OIML砝码规范等级(误差)表：
等级E1E2F1F2M1M2M3
重量±mg±mg±mg±mg±mg±mg±mg
1mg0.0020.0060.020.060.2--
2mg0.0020.0060.020.060.2--
5mg0.0020.0060.020.060.2--
10mg0.0020.0080.0250.080.25--
20mg0.0030.010.030.10.3--
50mg0.0040.0120.040.120.4--
100mg0.0050.0150.050.150.51.5-
200mg0.0060.020.060.20.62-
500mg0.0080.0250.080.250.82.5-
1g0.010.030.10.31310
2g0.0120.040.120.41.2412
5g0.0150.050.150.51.5515
10g0.020.060.20.62620
20g0.0250.080.250.82.5825
50g0.030.10.3131030
100g0.050.150.51.551550
200g0.10.3131030100
500g0.250.752.57.52575250
1kg0.51.551550150500
2kg1310301003001000
5kg2.57.525752507502500
10kg5155015050015005000
20kg10301003001000300010000
50kg25752507502500750025000