GI-H100 Series Through hollow shaft incremental encoder with housing 100mm, bole 30,32,38,40,45mm is designed to fit directly on either a motor or other shaft where position, direction, or velocity information is required. The advanced Opto-ASIC based electronics provide the superior noise immunity necessary in many industrial applications. H100 Series conveniently features a clamp- type mount for fast and easy mounting over a large range of shaft sizes. An optional anti-rotation flex mount maintains housing stability.