No 405 Verulam Imperial Architects Scale Rule 12 Inch

• Imperial Architect's Verulam scale rule 
• Professional quality
• Exceptional clarity and legibility
• Unequalled accuracy and design
• Material is chosen for its toughness and stability  
• Also available in 6" length

12" Imperial Dividings: 1/8", 1/4"x1/2", 1"=1ft, 3/8", 3/4" x 1 1/2", 3"=1ft (Armstrong 12ths)