June TailorT-Shirt Transformation Ruler, 15.5-inch, Acrylic, White, Each

What type of pen or marker will fit in the slots?

Is this correct that it ships in 1 to 2 months? Do they mean days?

is this ruler transparent, (can I see through it) and can I use it as a cutting guide for my rotary cutter or do I draw lines then cut after removing

what 's item ?