... is measured to the FP, not the blunt nose, and measured square along the main rail, i.e. it is a component of the lead length. If you want a known dimension along the turnout rail to the blunt nose as in your PRR drawing, you must do some calculations* at the known crossing angle (frog number) to arrive at the required dimension to enter. Templot draws a marker line across between the rails at the end of the turnout curve. The red object here is the ruler tool: 2_071818_210000000.png To enter this dimension directly you can click the dimension showing in blue above on the mouse action panel, or real> V-crossing options> V-crossing settings... menu item: 2_071828_550000000.png Click the fixed at... option and then OK, after which the data-entry window appears on which to enter this dimension. (This dialog is unchanged for many years, notice the 1999 copyright in the bottom corner.) *If trig calculations are not your strong point, just ask on here ...