| |环规| | |||||
| 特性: 用于校对内测、三点内径千分尺的零位。 |
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| 公制 | |||||
| 货号 | 规格 | 刻印尺寸的不确定度 | 圆柱度 | 实际尺寸与真值之间的误差 | 符合标准DIN2250(1) |
| 货号 | |||||
| M170 | 5mm | ±0.0015mm | 0.0010mm | ±0.01mm | M174 |
| M190 | 6mm | ±0.0015mm | 0.0010mm | ±0.01mm | M194 |
| M220 | 8mm | ±0.0015mm | 0.0010mm | ±0.01mm | M224 |
| M230 | 10mm | ±0.0015mm | 0.0010mm | ±0.01mm | M234 |
| M250 | 12mm | ±0.0015mm | 0.0010mm | ±0.01mm | M254 |
| M260 | 16mm | ±0.0015mm | 0.0010mm | ±0.01mm | M264 |
| M270 | 20mm | ±0.0015mm | 0.0010mm | ±0.01mm | M274 |
| M290 | 25mm | ±0.0015mm | 0.0010mm | ±0.01mm | M294 |
| M300 | 30mm | ±0.0015mm | 0.0010mm | ±0.01mm | M304 |
| M320 | 40mm | ±0.0015mm | 0.0010mm | ±0.01mm | M324 |
| M340 | 50mm | ±0.0015mm | 0.0015mm | ±0.02mm | M344 |
| M360 | 62mm | ±0.0015mm | 0.0015mm | ±0.02mm | M364 |
| M370 | 70mm | ±0.0015mm | 0.0015mm | ±0.02mm | M374 |
| M380 | 75mm | ±0.0015mm | 0.0015mm | ±0.02mm | M384 |
| M400 | 87mm | ±0.0015mm | 0.0015mm | ±0.02mm | M404 |
| M420 | 100mm | ±0.0015mm | 0.0020mm | ±0.02mm | M424 |
| M440 | 150mm | ±0.0025mm | 0.0020mm | ±0.02mm | M444 |
| M460 | 200mm | ±0.0025mm | 0.0020mm | ±0.02mm | M464 |
| 英制 | |||||
| 货号 | 规格 | 刻印尺寸的不确定度 | 圆柱度 | 实际尺寸与真值之间的误差 | 符合标准DIN2250(1) |
| 货号 | |||||
| M171 | 0.2" | ±0.00006" | 0.000040" | ±0.0004" | M175 |
| M191 | 0.275" | ±0.00006" | 0.000040" | ±0.0004" | M195 |
| M221 | 0.35" | ±0.00006" | 0.000040" | ±0.0004" | M225 |
| M231 | 0.425" | ±0.00006" | 0.000040" | ±0.0004" | M235 |
| M251 | 0.5" | ±0.00006" | 0.000040" | ±0.0004" | M255 |
| M261 | 0.65" | ±0.00006" | 0.000040" | ±0.0004" | M265 |
| M271 | 0.8" | ±0.00006" | 0.000040" | ±0.0004" | M275 |
| M291 | 1" | ±0.00006" | 0.000040" | ±0.0004" | M295 |
| M301 | 1.2" | ±0.00006" | 0.000040" | ±0.0004" | M305 |
| M321 | 1.6" | ±0.00006" | 0.000040" | ±0.0004" | M325 |
| M341 | 2" | ±0.00006" | 0.000060" | ±0.0008" | M345 |
| M361 | 2.5" | ±0.00006" | 0.000060" | ±0.0008" | M365 |
| M371 | 2.8" | ±0.00006" | 0.000060" | ±0.0008" | M375 |
| M381 | 3" | ±0.00006" | 0.000060" | ±0.0008" | M385 |
| M401 | 3.5" | ±0.00006" | 0.000060" | ±0.0008" | M405 |
| M421 | 4" | ±0.00006" | 0.000080" | ±0.0008" | M425 |
| M441 | 6" | ±0.00010" | 0.000080" | ±0.0008" | M445 |
| M461 | 8" | ±0.00010" | 0.000080" | ±0.0008" | M465 |