Holmarc Opto-Mechatronics Pvt. Ltd. Supplies Solid Mini Breadboard of 5mm Thickness. Holmarc Opto-Mechatronics Pvt. Ltd. Manufactures precision manipulators. Solid Mini Breadboard of 5mm Thickness is used mainly to construct small optical experimental setups. Solid Mini Breadboard of 5mm Thickness is provided with M4 tapped holes on 12.5mm grid. These breadboards are also available in vacuum compatible type. These are available in various shapes, sizes and with different patterns of tapped holes other than standard models.