"Bounded range" components allow a user to interactively select one of a bounded range of values. Bounded range components in Pivot include:
Slider - Allows a user to select one of a range of values by dragging the mouse.
ScrollBar - Allows a user to select one of a range of values using up/down buttons or a draggable "thumb" that also represents an extent value. Most often used to facilitate scrolling in a scroll pane but can be used in other contexts.
Spinner - An "up/down" control allowing a user to cycle through a range of pre-defined values.