美國PITAPE直徑測量卷尺（π尺、派尺、PI尺、PITAPE、圓周尺）
一、美國PI TAPE(圓周尺)是依據圓周算法,進而發展為一輕便,易于攜帶之大型圓外徑,量測器具二、小讀值可0.01MM,&plun;0.03MM(直徑3600MM以內)
三、讀音值方式,由如一般游標卡尺
四、本體材質,301HY(不銹鋼彈簧鋼)
五、原廠校正儀器,可追塑M.I.S標準，（附原廠校正書）讀值方式
DiameterRange | 1095 Spring Steel | 716 Stainless Steel | Blue Easy to Read Style | White Easy to Read Style |
15-50mm O.D. | PM000 | PM000SS | ------ | PM000WEZ |
25 -100mm O.D. | PM00 | PM00SS | ------ | PM00WEZ |
28 -200mm O.D. | PM0 | PM0SS | PM0EZ | PM0WEZ |
28 -300mm O.D. | PM02 | PM02SS | PM02EZ | PM02WEZ |
50 -300mm O.D. | PM03 | PM03SS | PM03EZ | PM03WEZ |
100-300mm O.D. | PM1 | PM1SS | PM1EZ | PM1WEZ |
50 -600mm O.D. | PM1SP | PM1SPSS | PM1SPEZ | PM1SPWEZ |
300 -600mm O.D. | PM2 | PM2SS | PM2EZ | PM2WEZ |
300 -900mm O.D. | PM2SP | PM2SPSS | PM2SPEZ | PM2SPWEZ |
600 -900mm O.D. | PM3 | PM3SS | PM3EZ | PM3WEZ |
600 -1200mm O.D. | PM3SP | PM3SPSS | PM3SPEZ | PM3SPWEZ |
900 -1200mm O.D. | PM4 | PM4SS | PM4EZ | PM4WEZ |
1200-1500mm O.D. | PM5 | PM5SS | PM5EZ | PM5WEZ |
1500-1800mm O.D. | PM6 | PM6SS | PM6EZ | PM6WEZ |
1800-2100mm O.D. | PM7 | PM7SS | PM7EZ | PM7WEZ |
2100 -2400mm O.D. | PM8 | PM8SS | PM8EZ | PM8WEZ |
2400 -2700mm O.D. | PM9 | PM9SS | PM9EZ | PM9WEZ |
2700 -3000mm O.D. | PM10 | PM10SS | PM10EZ | PM10WEZ |
3000 -3300mm O.D. | PM11 | PM11SS | PM11EZ | PM11WEZ |
3300 -3600mm O.D. | PM12 | PM12SS | PM12EZ | PM12WEZ |