>Is it possible to construct an uncountable partition $(A_\delta)_{\delta\in[0,1]}$ of the unit interval $[0,1]$ such that $\mu (A_\delta)=1$ for each $\delta\in[0,1]$? ($\mu$ stands for the outer Lebesgue measure.) My motivation is as follows: Using Vitali sets of outer measure $1$, it is possible to construct a **countable** partition of $[0,1]$ with such properties. Indeed, one just need to put $$A_\delta:=V+\delta \mod 1,\quad \delta\in\mathbb{Q},$$ where $V$ is the Vitali set of outer measure $1$. My question is whether it is possible to construct an **uncountable** partition of $[0,1]$ with these properties.