To resize an object numerically
- Select the object you want to resize in the Scene View. 
- Click the Item Tools tab, and slide out the Transform panel. 
- Type in numerical values into the manual entry boxes to move the object by the amount entered: - Scale X, Y, Z represent a scaling factor (1 being the current size, 0.5 half, 2 being double, and so on). 
- Transform Center X, Y, Z represent the scaling center point.