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Category: Asphalt
Sub Category: Pavement, Surface Regularity
Product Group: High-Low Detector
• Easy-to-use, one-person operation.
• Lightweight aluminum frame construction.
• Vertical-sweep visual indicator.
• Optional simultaneous sound indicator.
The High-Low Detector (Rolling Straight Edge) is used for measuring pavement planeness.
16 ft. (4.9 m) span. With reinforcing aluminum plate riveted to either side of frame.
| Entrained Air Readings % | Magnified; range from 0 to 1/4" (6.4 mm), high or low. |
| Description | High-Low Detector, 16 ft. |
| Frame | Rectangular aluminum stock. |
| Stands | Front and rear; for storage, transport, and testing. |
| Wheels | Ground concentric with inside diameter of their ball bearings; neoprene tires and adjustable scraper blades for accuracy; one front, one rear and one center indicator wheel. |
| Dye | Bright orange; 12 oz. (340 g) aerosol can; mounts beside indicator wheel; contains no fluorocarbons; non-clogging. |
| Handle | For steering; with button for discharging dye. |
| Scale | Vertical; large pointer; mounted above indicator wheel; magnifies variations 16x. |
| Graduations | 1/8" or 1 mm. |
| Readings | Magnified; range from 0 to 1/4" (6.4 mm), high or low. |
| Weight | Net 102 lbs. (46.3 kg) |
