tip the scale

arse over tip

Tumbling or falling; upside-down.

off the scale

Far in excess of what is normal or measurable.

pro tip

A useful piece of advice.

returns to scale

a function describing how returns scale when production increases in the long run

thumb on the scale

An act of bias or a tactic for cheating which creates a situation that unfairly benefits one party involved in an interaction.

tip of the hat

A gesture of acknowledgement; often, an expression of gratitude; originally by doffing one's hat.

tip of the ice cube

The first aspect of an insignificant or exaggerated problem or situation.

tip of the iceberg

A small indication of a larger possibility; the first part encountered of a problem that is much bigger than it seems.