Show off your sense of humor with this black t-shirt featuring a funny statement about service engineers. The tee reads, "SERVICE ENGINEER WE DO PRECISION GUESS WORK BASED ON UNRELIABLE DATA PROVIDED BY THOSE OF QUESTIONABLE KNOWLEDGE" in a bright blue, eye-catching font. The shirt is made of a comfortable-looking fabric that is suited for everyday wear. This fun t-shirt is perfect for service engineers with a sense of humor, or as a gift for the service engineer in your life. Wear it to work, casual outings, or anywhere you want to get a laugh.