品牌
代理商厂商性质
杭州市所在地
三丰环规用于校对内测千分尺、三点内径千分尺、测缸规、内径量表
| 尺寸 | 型号 | 尺寸 | 型号 |
| | 177-220 | | 177-177 |
| | 177-222 | | 177-133 |
| | 177-225 | | 177-286 |
| | 177-227 | | 177-139 |
| | 177-230 | | 177-288 |
| | 177-236 | | 177-140 |
| | 177-239 | | 177-290 |
| | 177-242 | | 177-178 |
| | 177-208 | | 177-146 |
| | 177-246 | | 177-292 |
| | 177-248 | | 177-314 |
| | 177-250 | | 177-147 |
| | 177-252 | | 177-316 |
| 尺寸 | 型号 | 尺寸 | 型号 |
| | 177-255 | | 177-294 |
| | 177-204 | | 177-318 |
| | 177-257 | | 177-148 |
| | 177-205 | | 177-296 |
| | 177-263 | | 177-298 |
| | 177-267 | | 177-300 |
| | 177-271 | | 177-302 |
| | 177-275 | | 177-304 |
| | 177-125 | | 177-306 |
| | 177-126 | | 177-318 |
| | 177-284 | | 177-310 |
| | 177-132 | | 177-312 |
