Albert Einstein was a theoretical physicist, not an experimental one. His work primarily involved thought experiments and mathematical equations. Therefore, he didn't rely on complex, specialized equipment in the way that experimental physicists did.

However, he did use some basic tools:

* Pen and paper: Einstein famously used these to scribble down his ideas and calculations, which he would then develop further.

* Blackboard: He would often use a blackboard to illustrate his concepts and theories.

* Slide rule: This was a common tool for making calculations before the advent of electronic calculators.

* Books and journals: Einstein relied on these for research and to stay current with scientific advancements.

It's important to remember that Einstein's greatest contributions came from his innovative thinking and profound understanding of the universe, rather than the specific equipment he used.