Impact has a high xheight,reaching nearly three quaters of the cap height
Short descender s
Impact has a very short descenders. The descenders ae actually smaller than the ascenders.
Narrow Counter s
x p t
Tall ʻxʼ height
Impacts interior counters are very narrow.
Short ascender s
The ascenders of impact are very short making up about an eighth of the letter.
xx oo pp tt Impact compared to Helvetica
Impact is a realist sans-serif typeface designed by Geoffrey Lee in 1965 and released by the Stephenson Blake foundry. Its ultra-thick strokes, compressed letterspacing, and minimal interior counterform are specifically aimed, as its name suggests, to “impact”. Impact has a high x-height, reaching nearly to threequarters the capital line. Ascenders are short, and descenders even shorter. The face bears comparison with the similarly designed, but narrower, typeface Haettenschweiler, the Letraset face Compacta, and the Linotype face Helvetica Inserat.