404 Repositionable Adhesive is often used for making your rulers grip better.
404, 250ml Spray
Loctite 404 Quick Set Instant Adhesive
Multi Purpose Spray Tack - 20 Oz. - 0843DI - Saez Distributors
Odif - 404 Repositionable Adhesive, 7.05 oz - 695301430412
ODIF 404 Spray and Fix Permanent Repositionable Adhesive for Craft Material - 174g : : Tools & Home Improvement
Krylon 11-oz Spray Adhesive in the Spray Adhesive department at
404 Spray Repositionable Paper Adhesive - 7.05oz Can - ODIF USA
Loctite 1712314 13.5-Ounce Aerosol Can General Purpose Spray Adhesive : Home & Kitchen
Odif - 404 - Repositionable Spray Glue > Glues & Sprays > Barnyarns Ripon LTD