Heathrow 120000 with Pen

Description

Heathrow Scientific HS120000 with Pen
Features
Light, ergonomic body is balanced for easy manipulation
Select between an audible beep or an led flash to acknowledge count
Store up to 32 separate counts and display the total of all counts
Count up/down verification
Quick and easy to change between different colored markers to check different colony counts in the same view
Lock counter off to allow use of the marker without registering more counts