Alvin Triangular Scales Ruler

12" Black Aluminum Architect Triangular Scale 12" Black Aluminum Engineer Triangular Scale 12" Bamboo Engineer Triangular Scale 12" High Impact Plastic Engineer Triangular Scale 1 12" High Impact Plastic Engineer Triangular Scale 2 12" Black Plastic Architect Triangular Scale 12" Black Plastic Engineer Triangular Scale 12" Aluminum Architect Triangular Scale 12" Aluminum Engineer Triangular Scale 4" Mini Hardwood Architect Triangular Scale 4" Mini Hardwood Engineer Triangular Scale 4" Mini Aluminum Architect Triangular Scale 4" Mini Aluminum Engineer Triangular Scale 12" High Impact Plastic Combination Triangular Scale 1 12" High Impact Plastic Combination Triangular Scale 2 18" Aluminum Architect Triangular Scale 24" Aluminum Architect Triangular Scale 12" High Impact Plastic Engineer Triangular Scale 12" High Impact Plastic Architect Triangular Scale