Need a bubble level? Really? Nikon Says :-)…
“With the D800/D800E, you can always check the LCD monitor or the viewfinder for both the camera’s position in relation to the horizontal plane and its pitch (forward or rear rotation). This can enhance compositional accuracy, particularly when shooting still lifes, landscapes and architecture.”
Even my old D600 (sold) has one.
Started out doing photography at the age of 6 using an uncle's old 1940 kodak brownie box camera. At 15 years of age, I decided to buy my very own 1975 Praktica SLR camera. I now shoot with a Nikon D850. I do unpaid TFP and commercial paid work.