The laboratory standard tool for counting bacterial colonies or tallying any repetitive event. Four-digit counter features a quick reset knob and a lens that makes the digits very easy to read. No-fail mechanism and tough, outer corrosion-proof stainless steel case ensure years of use.

• Finger ring for a secure, comfortable grip
• Counting made easy
• Numbers instantly and automatically return to zero with a twist of the reset knob
• Protective window seals out dust, dirt and humidity
• Corrosion-proof stainless steel outer material for long-life