Vote now! For a limited time, the official Engineers’ Choice ballot is open for voting for Control Engineering North American print and digital edition subscribers. At www.controleng.com/NP4E, vote for the best Engineers’ Choice finalists of 88 entries across 26 categories. Based on your experience, please vote in as many categories for which you feel qualified based on technological advancement, service to the industry, and market impact. Details and photos are available for each product.