SAJ-330鉛字法透明(ming)度(du)(du)計材(cai)質為有(you)機(ji)玻璃,透明(ming)度(du)(du)計為長330MM,內徑25MM的無色有(you)機(ji)玻璃筒,刻有(you)10MM分度(du)(du),筒底有(you)白色瓷片(內有(you)黑色E字)。