Kellonlasi
Gelsonlab HSCG-1175 Laboratory Sapphire Double Dome 1.0mm Edge Thick Watch Crystal Concave Kellonlasi Plain Kellonlasi Beaker Cover
Koko 17mm, 17.5mm, 18mm, 18.5mm, 19mm, 19.5mm, 20mm, 20.5mm, 21mm, 21.5mm, 22mm, 22.5mm, 23mm, 23.5mm, 24mm, 24.5mm, 25mm, 25.5mm, 26mm, 26.5mm , 27mm, 27.5mm, 28mm, 28.5mm, 29.5mm, 29mm, 30mm, 30.5mm, 31mm, 31.5mm, 32mm, 32.5mm ,, 33mm, 33.5mm, 34mm, 34.5mm, 35mm, 35.5mm, 36mm, 36.5 mm, 37 mm, 37,5 mm, 38 mm, 38,5 mm, 39 mm, 39,5 mm, 40 mm (halkaisijalla voi olla ± 0,05 mm ero)