Construction Master 5 feet-inch-fraction calculator - Calculated Industries 4056

This construction calculator from Calculated Indutries (4056) is ideal for contractors, builders, architects, engineers, tradespersons, advanced do-it-yourselfers.

Features:

• Complete rafter, roof and framing solutions: Custom Rafter function gives you common Rafters, regular and irregular hips, valleys and jacks. Jack rafter feature provides compelete solution for regular and irregular pitch roofs. Displays on-center spacing.
• Linear, area and volume solutions: Works in and converts between all building dimensional formats: Metric, feet-inch-fractions and yards, including area and volumes.
• Stair solutions are nearly automatic: Complete stair calculations for risers, treads, stringer lenght and incline angle. Displays run and rise. 
• Built-in right-angle calculations
• Circular solutions for arcs, columns, pillars, windows, post-holes and more.
• Rake-wall function determinesstud lenght for any on-center spacing in descending order. 
• Board feet lumber estimating.
• Backspace key: Makes it easy to change just-entered values
• Cost per unit: easily solve unit costing and pricing.
• "Parperless" tape: Allows for review of last 20 entries; double-check totals.
• Automatic shut-off saves battery life.