Hawkeye Blue Swing Prism Borescopes
Hawkeye Blue Swing Prism Borescopes have a tiny prism at the tip that pivots or swings, to vary the direction-of-view from 16° to 118°. A ring on the borescope body controls the prism direction. The field-of-view is 45°, so the borescope can effectively see from -7° to 133°. Another ring focuses the borescope and a third rotates the borescope tube over more than 360° sideways, in any direction, without turning the body.
Diesel engine machines use Swing Prism Borescopes to examine cylinders, pistons and valves. Aircraft engine mechanics use the Swing Prism to locate and investigate FOD (foreign object damage and debris) in jet engines.
| Outside Diameter | Length | DOV | FOV | Model # |
| 0.237" (6 mm) | 9.6" (245 mm) | 16° to 118° | 45° | HBS 060 245 045 |
| 0.237" (6 mm) | 17.9" (455 mm) | 16° to 118° | 45° | HBS 060 455 045 |
| 0.315" (8 mm) | 12.8" (325 mm) | 16° to 118° | 45° | HBS 080 325 045 |
| 0.355" (9 mm) | 23.8" (605 mm) | 16° to 118° | 45° | HBS 090 605 045 |
| 0.355" (9 mm) | 31.69" (805 mm) | 16° to 118° | 45° | HBS 090 805 045 |
