I've had a couple of devices over the years that require one to unscrew a screw to open a cover to replace batteries. It's not that common, but I've certainly had them floating around.
In fact...I think that my analog multimeter does that, with a 9V battery.
goes to look
Yeah, Phillip's head screw. Though you only really need power on that thing for continuity testing, and some people might never even need to power it.