2x Flash Cache shoe Spirit Level Hot Shoe supplies Universal For Canon Nikon (Electronics)
I sent an email to the seller gave me a measure of 17 mm in diameter. But with the support (although I specifically unsupported) makes the spirit level is 9 mm.
2x Flash Cache shoe Spirit Level Hot Shoe supplies Universal For Canon Nikon (Electronics)
This shoe level is quite difficult to press down on the claw of my Nikon D5300. Prefer a level of 3 dimensions, more convenient louse vertical photos ...