This simple mount allows the attachment of an Accu-Rite thermometer to a Honda Pioneer 700.  The components of this design can be used for other mounting solutions.  See my ball mount here: https://www.printables.com/model/1462131-ball-mount-for-phone-gps-camera

Print in any outdoor stable filament, using supports.  Requires an assortment of M3 screws and nuts, and a 8.5x2mm round magnet available from Harbor Freight. Use a rounded button head screw to connect the tube frame mount and thermometer bracket to the ball stud to ensure clearance.  Socket heads will be too tall.

I've completely redesigned the tube clamp and ball mount to make them print better.  This requires assembly using 3mm hardware, but the prints will be higher quality, and the parts can be adapted to work with other mounting solutions.  The thermometer bracket has been redesigned to use an 8.5x2mm magnet to hold the thermometer.  I used a drop of super glue to glue the magnet into the slot.