- High tempered aluminum for maximum durability
- Lumber Scale - Board Feet Equivalent
- Decimal Equivalent Table - Fractions to Decimals
- Metric Conversion Table - Inches to Meters
- Formula for Squaring a foundation
- Deep, long wearing gradations for easy reading
- Protective lacquered coating resists corrosion
- 16 x 24"
| Model | Unit Measurement | Price |
| 45-600 | Metric / English | 320.00 |
| 45-530 | Metric | 260.00 |