Great find and cool pair of old Campus Boots.
I take measurements for boots from outer boot by placing a tape or yard stick against the wall and place the boot, back firm against wall and center of tape. Back of boot to tip of center toe. Width is the ball of boot. I suggest if you have a like shoe or boot ( close to style of toe and heel height) to compare if you can. I do sell a lot of footwear and fit is always good unless a buyer hasn't read measurements or description. I have several great reviews for fit due to measurements I provide.
MEASUREMENTS:
Back of boot to toe tip length - 10"
Outer boot from back of boot to front taken on the side of boot outer- 9. 75"
Width - 3. 5"
Tall - 17"
Calf Shaft - 14"
Heel - 2" stacked heel
Platform sole - 10/16"

This item is sold from an excellent, highly rated vintage boutique in Beautiful Eastern Wa.