GeoMetric® Series conforms to the following cylinder specifications: VDMA 24562, DIN/ISO 6431, and ISO/FDIS 15552. One of the most desirable features of the cylinder line is the dual switch/sensor groove design that is a standard offering on all GeoMetric®cylinders. The dual groove design offers great flexibility when mounting switches and sensors to the cylinders. One groove is a traditional round groove and the other is what we call the CombiGroove®. The CombiGroove® is a unique design that will accept round and angular switches/sensors.