| All returns accepted | ReturnsNotAccepted |
|---|---|
| Model | Air Duct Calculator |
| Country/Region of Manufacture | United States |
| Type | Slide Rule Calculator |
| MPN | Does Not Apply |
| Brand | Unbranded |
Check the listing for details. Air Duct Calculator - Slide Rule. Condition: New. Listed at 8.95 USD. Air Duct Calculator -Slide Rule Style This rectangular air duct calculator is the technicians favorite. Provides the following information with one setting:- Friction- Velocity- Round Duct Size- Surface Area...and more Size: 4" x 8.5". ISBN No. 9781622709823Sturdy construction of heavyweight calculator board with 6 metal eyelets.