顆粒尺寸分佈
Particle Sizing Distribution包裝樣式


NG1
Eyepiece Reticle with central Rectangle and Globes/Circles for particle sizing and counting

NG2
Eyepiece Reticle with central Rectangle and Globes/Circles

NG10
Eyepiece Reticle to satisfy Bristish Standard BS3625/BS3260

NG12
Eyepiece Reticle with ruled grid and Globes/Circles for particle sizing and counting