Bacterial col counting apparatus (NSN 6640-01-460-8800)
Special Features
Hand-held; 15 cm long; supplied with a 3 v battery and two long-life replaceable felt tip pens; pens use water and oil resistant red and black ink; for repetitive counting tasks; gives a beep and registers a cumulative count on a four digit lcd display; a switch selects up or down counting modes for counts and count checks; single-handed operation
