Rugged, clear plastic viewer with a dish to keep aquatic organisms immersed in water, moving naturally, for observation. 5 mm grid etched on bottom to allow measurement of organism. Top portion has 2.5X magnifying lens. Item is around 3" high and the base is approximately 3.5" square.
ترست بايلوت
منذ يوم واحد
منذ أسبوعين
