works OK, looks cute
This is one of the inexpensive MSI "Accutire" strain-gauge pencil gauges (perhaps an MS-4820B, cut in half?), wrapped up in a cute little Mr. Bibendum shroud. ("Mr. Bibendum" is the actual name of the Michelin Man.) In this case, "inexpensive" isn't pejorative: this gauge functions just fine, and (at least while new) seats on the valve without leaking -- which is the biggest failing of cheap gauges. (Note the MS Accutire gauges get mixed reviews on this score, so these Michelin versions may vary too.) It's both: (a) cute enough, and (b) small enough, to live in your Mazda Miata's glove box!

The description lacks measurements: it's between 3" and 4" long, and the feet are roughly twice the width of the valve seat (i.e. about as wide as a ball chuck). The description also has optimistic marketing-speak: the display is NOT "large"; it fits in half the width of Mr. B's chest! (No back light on the LCD, if you were wondering.) Look at the second photo comparing the size of Mr. B to a modern alarm-key -- that's accurate. BUT the hand and the wheel are very misleading! The hand must be some tiny female, and the wheel can't be over 13", or maybe foreshortened. Comes in a blister-pack.