Identify this radical or character
is not a Chinese radical. None of the two-strokes radical looks like it

You can see it as the combination of two strokes/ radicals

Radical #1 一
Radical #6 亅

You can see it as the character 寸 (also the radical #41 itself) missing a dot 丶 (丶 is also the radical #3)

Notice: It is not the character 丁 (the radical of 丁 is 一 )
Side note: If it is offered as a riddle, my answer would be 一寸少一点 (one inch minus a dot) = slightly less than an inch; 一点 (a dot) can also mean 'a little'