Electronic position indicators assemble on passing-through shafts and reflect their rotation to provide readings of absolute or incremental positioning of machine components. They offer operating and programming modes with multiple function keys to select or set various parameters such as units of measure, offset, direction of rotation, and maximum speed of rotation. These electronic indicators offer more flexibility and precision than mechanical indicators for applications where units of measure need to change or absolute and relative readings are required.

Mechanical position indicators assemble on passing-through spindles and reflect their rotation to provide readings for the positioning of machine components. These mechanical roller counters are suited for applications with consistent adjustments where the direction of movement and required adjustment do not involve a unit change.

Hole reducing sleeves are cylindrical bushings that adapt position indicators to fit spindles with a smaller diameter than the indicator's reamed hole.