Fieldpiece ACM3 Carbon Monoxide Detector Accessory Head
In my last installment I wrote about the Fieldpiece HS36 Stick Meter. 
This meter accepts the accessory heads that Fieldpiece makes to expand its meters to fit its customer’s specific needs. The ACM3 CO Detector Head (pictured at right) is a snap-on Accessory that adds the capability of measuring CO to your Fieldpiece Stick Meter.