i wasnt too far off with the guess of 7.5x5.25. the reason it doesnt look as big as it is is because its at a sideways 45 degree angle. if it was taken straight on either from top bottom or side, it would look bigger. looking down on it distorts length. also, theres nothing to reference the size- usually we can reference against a woman. using a guys hand is useless as the size of guys hands varies so much more than the size of womens.