Holmarc Opto-Mechatronics Pvt. Ltd. Supplies Passive Air Isolator with Autonomous Legs. Holmarc Opto-Mechatronics Pvt. Ltd. Manufactures precision manipulators. Passive Air Isolator with Autonomous Legs is employed in table supports for isolating the table top from vertical and horizontal disturbances. Passive Air Isolator with Autonomous Legs has vertical and horizontal natural frequencies of 4 - 8 Hz and effectively isolates vibrations in the critical range of 10 - 50 Hz. Here legs operate independently. The isolators which are fixed to four vertical members of the support system are individually filled with air by a pedestal pump to a pressure of 25 PSI. These are available in different models.