Cole-Parmer Digital Counter Pen 20610-30 auspowers_batchthree Sufficient Quantity: the package comes

Sufficient Quantity: the package comes with 6 pieces of 1/2-inch by 1-1/2-inch spring

doesn't block the ear canal

89 charge when used from a payphone

236 inch Total length: 38 mm/ 1

Cole-Parmer Digital Counter Pen 20610-30 auspowers_batchthree Sufficient Quantity: the package comesCole Parmer Digital Counter Pen 20610 30 Counter pen is a combination marker and digital counter designed for the lab and plant. Use it to count cell growth on petri dishes, inventory parts, and tally samples received. Counter beeps each time a mark is made ensuring an accurate tally. Lcd simultaneously displays total and can be reset at the touch of a button. Durable ABS plastic pen features on off switch and comes with cap. Unit measures 6''l x 2