I carry the same tread depth gauge in my glovebox, along with this tire pressure gauge. I prefer this type of gauge because it has a bleed valve to accurately set the pressures.
Have had this same one for a few years. Nothing fancy but works well.
Originally Posted By: totegoat
When I asked to buy a Milton, Les Schwab Tires gave me one.
I know right! They're cheap and I have 2 or 3 around the garage.
I have so many of those basic Milton ones from work. I've never worn one out, but they do seem to like to grow legs or occasionally I give one to a customer or co-worker lol.
I own both of the gauges shown in the links above(though I might be hard-pressed to find both at once!). Either one works fine. If anything, the white plastic background is easier to read in dim light. Take your pick, you can't go wrong.
Got mine at O'Reilly's for a few bucks. It's a Milton and it works great. They do seem to get lost pretty easy so maybe buy a spare. Keep one in each car glove box.
Those Milton tread depth gauges might be OK for a dirty handed tire buster and the rest of the unwashed masses, but not for a BITOG tire fanatic.
Nothing less than the (cheap at) $282 Starrett 3753A-6/150 Electronic Depth Gage that measures depths to 0.0005" (five ten-thousandths of an inch) will do for us.
http://www.starrett.com/metrology/product-detail/1-Precision-Measuring-Tools/11-Precision-Hand-Tools/1104-Depth-Gages/110401-Electronic-Depth-Gages/3753A-6~150