| Year | 1937 |
| Date | 07-Oct |
| Volume | 77 |
| Issue | 1,900 |
| Page | 360 |
| Category | Trade |
| Part | |
| Title | An Aural Device for Detecting the Condition of Machinery ("Bin-Aural". Capac Company) |
| Author | |
| Notes | Testing bearing condition with Tectoscope, testing gear tooth noise, comparing the condition of bearings with dual Tectoscope, comparing internal and external sounds of bearing, the "Type B" and "Type S" equipment, the "Mon-Aural" equipment |