Vintage Medical Thermometer Apex Mercury old style +box

This is a vintage medical supply APEX brand "easy to read" fever thermometer. It's the old style with mercury. Comes complete with original box as well as a black plastic holder that screws shut and has the pocket attachment, so you could wear it in your shirt pocket.
This comes out of my parents decades of acquired 'stuff'!!!
Box says it's from Faichney Instrument Corporation of Watertown NY.
Email questions and thanks for looking.
Be sure to stop and see my other auctions. - I'm listing like a crazy person!!