Holmarc Opto-Mechatronics Pvt. Ltd. Manufactures Machined Finish Switchable Magnetic Base. Holmarc Opto-Mechatronics Pvt. Ltd. Supplies precision manipulators. Machined Finish Switchable Magnetic Base comes with a switchable magnet for the easy positioning of optical components. Machined Finish Switchable Magnetic Base ensures stability and is provided with the feature of bottom mounting surface has ground finish.