

Gives dimensions and permissible material defects and processing faults of graticules with diameters of 19 mm, 21 mm and 26 mm to be used in microscope eyepieces for the purpose of measurement, assessment and comparison.
ترست بايلوت
منذ 3 أسابيع
منذ يوم واحد
منذ شهر
منذ يوم واحد