Rules Carpenters' Aluminum Rules AR Aluminum yardstick is parallel, accurate and flexible. Fea tures • Anodized aluminum Aluminum Meterstick MS-2 Aluminumn meterstick is parallel, accurate and flexible. Fea tures • This rule lies flat and features large, easy to read numbers • Anodized aluminum Cat. No. EDP Length Thickness Description Graduation AR-12 36101 12" .075" Ruled 2 Sides English AR-18 36102 18" AR-24 36103 24" AR2-36 36104 36" Cat. No. EDP Length Thickness Description Graduation in meters in mm MS-2 36107 39.37 1 .075 1.9 Ruled 2 Sides English and Metric 91 starrett.com R ules and S quares