The biggest, & perhaps most important difference with the Race Plate Zoom Compass from Silva is the size of the baseplate. By making it significantly smaller it fits better in the user’s h&. It also has a smaller capsule which significantly reduces the risk of bubbles. Another difference is with the stencil holes. They are withdrawn from the baseplate & put in a separate “scale & stencil hole” plastic card that comes together with the compass. Everything to keep the compass as clean as possible. They changed the needle design to increase the map visibility & with a Jet needle, it means that it’s extremely fast & stable which is great when you need to make quick decisions during a race. The rubber feet beneath the compass means better map contact & minimum risk of slipping.