Experience precision with the Official Canada Post Letter Mail Measurements Gauge Groove, a must-have tool for anyone who values accurate sizing and craftsmanship. ForgeDivision has crafted this essential gauge, designed to ensure your letters and mail fit perfectly into any envelope or groove, without compromising on security or aesthetics. The gauge is crafted for durability and ease of use, featuring clear markings for quick reference. It's an ideal accessory for professionals, hobbyists, and anyone looking to streamline their mailing process. Whether you're preparing important documents or organizing your personal mail, this measurement gauge is the perfect companion for seamless and efficient handling.

Small groove : 
245 mm x 156 mm x 5 mm (9.6 inches x 6.1 inches x 0.2 inches)

Large groove :

380 mm x 270 mm x 20 mm (14.9 inches x 10.6 inches x 0.8 inches)