Multimeters are a useful tool in prototyping. One of the ways you can use multimeters is by doing continuity test. Continuity test is useful in:

You may want to use this website to understand continuity tests for multimeters.

Inserting component leads smaller than the minimum size:

When prototyping, it is useful to design isolated circuits that can test individual components quickly.

Inserting component leads larger than the recommended maximum size into the breadboard will:

A standard breadboard can cater to lead diameters ranging from:

In electronics, a bread board could best be described as: