Pace Calculator Showing the single result Sort by popularity Sort by latest Sort by price: low to high Sort by price: high to low Sale! Ray Taulbot’s Slide Rule Pace Calculator NOW TURBO-CHARGED!! On State-Of-The-Art, Precision-Point RPM Software!! Powered by Iron Horse Software Innovations! $138.00 Original price was: $138.00.$97.50Current price is: $97.50. Add to cart