- Calculates quantity of sand, gravel or crushed stone needed to cover and area
- Calculates concrete required to fill an area.
- Very easy to use.
- Great Christmas gift for the contractor in your life!!
- You are purchasing one of each of these slide rulers
Details: This is a simple to use sliderule calculator. Just follow the instructions printed right on the slide itself and the calculations are done for you.
Package Dimensions: 6x178x57