技術參數：
《一》美國PDT（圓周尺）是依據圓周算法，進而發展為一輕便，易于攜帶之大型園外徑，測量器具
《二》小讀值可達到，精度±（直徑3600mm以下）
《三》讀值方式，由如一般游標卡尺
《四》本體材質，301HY（不生銹彈簧鋼）Stainless Spring Steel
《五》原廠校正儀器，可追塑。（附原廠校正報告書）
PI TAPE METRIC LIST
Diameter Range | 1095 Spring Steel | 716 Stainless Steel | Blue Easy to Read Style | White Easy to Read Style |
15-50mm | PM000 | PM000SS | ------ | PM000WEZ |
25 -100mm | PM00 | PM00SS | ------ | PM00WEZ |
28 -200mm | PM0 | PM0SS | PM0EZ | PM0WEZ |
28 -300mm | PM02 | PM02SS | PM02EZ | PM02WEZ |
50 -300mm | PM03 | PM03SS | PM03EZ | PM03WEZ |
100-300mm | PM1 | PM1SS | PM1EZ | PM1WEZ |
50 -600mm | PM1SP | PM1SPSS | PM1SPEZ | PM1SPWEZ |
300 -600mm | PM2 | PM2SS | PM2EZ | PM2WEZ |
300 -900mm | PM2SP | PM2SPSS | PM2SPEZ | PM2SPWEZ |
600 -900mm | PM3 | PM3SS | PM3EZ | PM3WEZ |
600 -1200mm | PM3SP | PM3SPSS | PM3SPEZ | PM3SPWEZ |
900 -1200mm | PM4 | PM4SS | PM4EZ | PM4WEZ |
1200-1500mm | PM5 | PM5SS | PM5EZ | PM5WEZ |
1500-1800mm | PM6 | PM6SS | PM6EZ | PM6WEZ |
1800-2100mm | PM7 | PM7SS | PM7EZ | PM7WEZ |
公差
Diameter Range 28-3600mm
Diameter Range 3600-5400mm
Diameter Range 5400-7200mm
Diameter Range 7200-9000mm
Diameter Range 9000-10,800mm
Diameter Range 10,800-12,600mm
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