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Show 1 GOOD HIGHWAYS Highway Surface Tester Keeps Record of Bumps A manufacturer of road machinery has recently perfected an ingeniouj recording Instrument to measure Inequalities In-equalities In highway pavement surface. sur-face. This Instrument is divided so that it may be mounted at the side of an automobile dashboard as shown in the Illustration, and is Intended to record variance In surface by th markings of pencils upon a rolled thart fed through the tiny machine. All inequalities in the surface of the pavement passed over by either of the front wheels are recorded. This Us- W IWt .-- i..-- -j Road Surface Tester. Is reduced to a horizontal scale whereby where-by 1 inch equals 50 feet, and a vertical verti-cal scale where H Inch equals 1 Inch. Irregularity In either line outward Indicates In-dicates a depression. Irregularity of the line inward Indicates a hump. The roll of paper constituting th chart is sufficient to record inequalities inequali-ties In ten miles of road surface for the guidance of road malntenanca officials. |