Pretty close. If they added an additional zero to make 1.0000 meters they would be the same number of significant figures technically. But it's all convention.

Pretty close. If they added an additional zero to make 1.0000 meters they would be the same number of significant figures technically. But it's all convention. I've been in classes where 1.000 would be 4 significant figures. > 120.0000 consists of six significant figures (1, 2, and the four subsequent zeroes) except for the last zero If the resolution is to 0.001.