John Andrew Wagner's Images
Organization: International Society of ArboricultureCountry: United States
Professional Societies:
| 7 Images of 4 Subjects | View Subject List | View Image Details | View Thumbnails |
| Image | Subject Name | Scientific Name | Description |
|---|---|---|---|
| 5375363 | people | Demonstration of a resitance-recording drill being used. | |
| 5375366 | risk tree | Resistance-recording drill in use. | |
| 5375368 | risk tree | Here you can see the thin drill bit of a resistance-recording drill. | |
| 5375367 | risk tree | Up close view of a resistance-recording drill against the tree. | |
| 5375365 | risk tree | Resistance-recording drills are an advanced drilling tools that measure the resistance over the distance drilled, which allows for fairly effective decay detection. However, like all decay detection methods, this equipment still have limitations. | |
| 5375408 | rigging (general) | Climbers use a common technique called a 'butt hitch' in which a piece is tied above a cut and the line is run through a block or crotch below the cut. | |
| 5375410 | rigging friction device | Friction devices have been designed for tree work, and they have some obvious control advantages over taking rapes around the tree |
