My main job is checking tires, this month alone I checked over 3000 tires mainly for Mercedes vehicles. Traditional tread depth gauges made it difficult to accurately measure the tread of ultra wide tires with equally sized grooves, this gauge does not have this problem due to the longer body spanning the grooves. I love that it's branded, sometimes it feels like it's 1/32 cheaper, overall I would buy it again and probably buy another one if this one moves.