Blood-pressure monitors.
We tested 16 monitors and found that automatic arm models worked best; most wrist models lagged way behind.
D001331:Automation; D015924:Blood Pressure Monitors / Q000191:economics; D003258:Consumer Behavior; D003365:Costs and Cost Analysis; D004867:Equipment Design; D006801:Humans; D006973:Hypertension / Q000517:prevention & control