Bright plastic case makes this hand tally counter lightweight yet sturdy. The counter advances by 1 with each click, up to a maximum of 9999. Turn the side knob to return the reading to zero. Use for general counting applications such as bacterial colonies. Additional Info: Hand Tally Counter Package Size(L x W x H): 2 X 2 X 2 (IN) Categories: Microscopy, Counter HTS Code: 9029.10.8000 UNSPSC: 4.11119e+007 Country Of Origin: INDIA