Technical Specifications The digital count on the display can be reset manually anytime by pressing the RESET key provided. An integral magnifying glass provided for easier counting of small colonies. Digital Display: 4 digits. Display Read Out : 0 - 9999Max. Counts: 9999. Petri Dish Size: 110 mm. Magnification: x 1.7, Dimensions: 274 (L) x320 (B) x 167 (H)mm, Weight :3 Kg. Approx .Power Supply: 220V ± 10%, 50 Hz AC, Accessories: Marking Pen, Magnifier Lens