Connecting Threads 100% Cotton Thread - 1200 Yard Spool (Parchment)

I can’t find the starting point on my spool of thread I just received. Any suggestions?

im rigging my model boat with metric15 m.m. cottoonthread what size would it be in inches

Can you use this for "bowl cozies" to go in the microwave? Instructions for cozies say use 100% cotton and fabric. Just checking. Thank you!

How tall is this spool?