Measuring COAL tool?

I'm sorry for asking such a ridiculous question, but will this Amazon item tell me the maximum COAL to the lands on my K31? I'm reloading a couple different size bullets, and the overall cartridge length is driving me crazy.

AltitudeCraft Bullet and Headspace Gauge Comparator Kit with 14 Inserts and 6 Bushings, Reloading Supplies and Equipment and Ammo Reloading Tool with Tin Box, Anodized Aluminum https://a.co/d/gPKbxHm

I appreciate everyone's help!