| The Steel Square in Use and Mechanism |
|
$15 |
| Framing and Rafter Steel Squares |
|
$12 |
| Western Engineer Handbook |
|
$12 |
| The Modern Electricam Engineer |
|
$45 |
| How it Works and How its Done |
|
$30 |
| Carpentry and Joinery |
|
$20 |
| Roof cuts and Rafter lengths |
|
$25 |