Tire tread gauge, how do you read it?

Bought a tire tread gauge however it has 3 different 32nds increments. Which one do I go off of?

 

you just turn it to get the right reading. If you look it is 30/32 on one side then 31/32 on the next and so on.

 

Im not sure what you mean? Turn gauge as I measure tire?

 

Seriously?

 

Sorry no pull out the needle looking part then push it in the tread till the "T" part hits the top of tread. Then look to see which reading is just above the round chrome part. The reading that is closest to that is your depth. I suck at typing explanations hope that helped.

 

If you look closely the 3 increments are not at the same spot. Each is for a different tread depth. If it measures between the two you round down.

 

I thought they were. My misunderstaning, I apologize

 

That’s ok. I have to put my reading glasses on to see my numbers.

 

In easy terms. You use them all. LOL

 

Lead tires (steering tires, converter dollies for semi-trailers and steer axles on full trailers ) must have at least 4/32s tread depth at any point on any major groove except where tread wear indicators or stone ejectors are located. All other tires must have 2/32s inch in every major groove of the tire.