OB Appoitment question

Melissa • My husband and I were blessed on November 19 2015 with our son Nolan! Currently pregnant with baby #2 👨‍👩‍👧‍👦
When you have your OB Appoitment does your doctor use the measuring tape to measure your uterus? Or does he just feel for it with his hands? Cause every time I've gone he just feels with his hands and says it's where it needs to be..(when I went to the specialist he did the same thing) is this because I already had a big stomach from being overweight so the measuring tape would not be accurate? Just curious if this is the same way for every one else :)