Yixing scale fitness is closed

(1) The length of the smallest grid on the scale is: 1mm, so its dividing value is:1mm;

(2) The exact value of the button is:1.0cm; ; The estimated value is 0.00cm；;

The diameter of the button is:1.0cm+0.00cm =1.00cm. 。

So the answer is: 1, 1.00.