The UR-101 T-Rex, With Textured Skin, Scaly Armor Covering Its Bezel, Sides And Lugs Measures 41 Mm In Diameter And 11.86 Mm Thick At Its Highest Point. Its Rounded Design, Provides The Perfect Base For This Guilloché Pattern. This Engraving First Appeared On The UR-105 T-Rex, Followed By The UR-100 T-Rex: "It's A Traditional Guilloched Dial Pattern", Says Martin Frei. "We Applied It To The Entire Surface Of Our Case, Right Up To The Edges. You Can Touch It. It Has An Animal, Physical, Almost Visceral Power." The Engraved Grooves Start At The Crown, Running Along The Entire Case In A Low-Gradient Climb, Up To The Steep, Curved Slope Leading To The Back.