Upside-Down M's

Upside down M's can sometimes look a bit like W's, but there are subtle differences. This is because of a law passed in 1921 stating that any typeface intended for comercial use must distiguish upside down M's from W's in certain ways, such as:

A different surface area
Different weight
Different (collective) angles
Pointing slightly more to the west

It is also illegal in English to have an M directly next to a W for this reason.

_{All content copyright Tom Crowley}