ACE has a range of low frequency pneumatic levelling mounts under the designations PLM and PAL: they keep vibrations, impacts and force peaks, e.g. from high performance and precision machines, at bay. The PLM pneumatic levelling mounts particularly serve the purpose of isolating test facilities and high performance machine with their low intrinsic frequency of 3 Hz. A ratio of 1:1 between the horizontal and vertical intrinsic frequency ensures strong horizontal stability and a longer service life, amongst other aspects. The low frequency PAL pneumatic levelling mounts with automatic level regulation create conditions with a constant level. This efficient variant, used in precision measuring devices amongst others, is distinguished by the fast reaction time and intrinsic frequencies, which can reach levels of up to 0.5 Hz depending on the design.