Cart Continue shopping “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!” has been added to your cart. Remove item Thumbnail image Product Price Quantity Subtotal × 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 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! quantity $138.00 Update cart Cart totals Subtotal $138.00 Tax $0.00 Total $138.00 Proceed to checkout -- Reduce multiple click by clicking on PayPal --