Scale indication device for electronic components

Abstract

A scale indication device includes a character plate having sets of characters printed on a front side thereof such that each set of characters has characters disposed about an eccentric circle having a predetermined radius. A scale plate is disposed adjacent the character plate. The scale plate has a window corresponding to each of the sets of characters such that only one of the characters in each set may be viewed through the window at a time. An eccentric rotation device is mounted on a gearbox and rotates the character plate such that different ones of the characters in each set may be viewed through the window. The rotation device includes a scale switching gear rotatable about an axis, a first engagement device formed on the scale switching gear at a distance from the axis equal to the predetermined radius, and a second engagement device formed on the character plate for rotatably engaging the first engagement device.

Dependencies are inferred from the claim text.