SCSI Safe Curve Indicator

The safe driving speed for any curve is quickly and accurately determined with the "SCSI" mounted in the engineer's car. The scale reads zero when the car is level, and will show "tilt" up to 25 degrees on each side. The scale is red beyond +/-10 degrees to denote danger zones.

The "SCSI" was designed by Slope-Meter in accordance with the specifications of the Minnesota Highway Dept. Traffic Division and is used nation-wide by highway and traffic engineers. Slope Meters are typically mounted on the dash in the operator's view and will give fast, accurate readings for any slope. The Slope Meter enables the operator to construct true slopes without waves. They also make is possible to do night work just as accurately as in daylight. The hermetically sealed Slope Meter is not affected by rain, dust, snow, or sleet.