Headstock Size

Does anyone have a comparison diagram of the different sized headstocks? I have a trace of the old one and was wanting to see it compared to the new one and see how much bigger it really is.
Does anyone know where the length is measured? Maybe from the nut, or the length of the 4 peg side?

Here’s the specs from the website.
Cutlass/StingRay 6-3/8″ (16.2 cm) long
Silhouette Special Only 5-7/8″ (14.9 cm) long

Does anyone really notice the extra 1.3cm?