Here are some types of balances:

* Beam balance: This is a classic balance with a beam that rotates on a fulcrum. The object being weighed is placed on one side, and known weights are placed on the other side until the beam is balanced.

* Spring balance: This balance uses a spring to measure the force of gravity on an object. The extension of the spring is proportional to the weight of the object, which is related to its mass.

* Electronic balance: This type of balance uses sensors to measure the weight of an object and displays the result digitally. They are often very precise and can handle a wide range of weights.

Let me know if you'd like to learn more about a specific type of balance!