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Unanodized, Circular, Solid Aluminum Optical Breadboards, Double Density Holes
Ø12.00" Aluminum Breadboard
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Diagram of the MBR6U Breadboard. For similar diagrams of the other circular breadboards, please see the Weights & Dims tab.
Thorlabs' circular, unanodized, double-density breadboards are constructed from a 1/2" (12.7 mm) thick aluminum plate; this thickness is sufficient to maintain flatness over the full area (see the table to the right for flatness specifications). These nonmagnetic breadboards feature 1/4"-20 (M6) tapped holes at twice the density of our standard 1" (25 mm) hole pattern to provide a convenient platform for assembling prototype optical assemblies, conducting experiments, and mounting small subsystems. Please see the Weights & Dims tab for breadboard diagrams that call out the hole spacings.
Each breadboard offers four 1/4" (M6) counterbored mounting holes for attaching the breadboard to an optical table, another breadboard, mounting posts, brackets, breadboard feet, or other surfaces and mounts.
Vacuum Compatibility Information
Thorlabs also offers rectangular double-hole-density optical breadboards, as well as rectangular standard-hole-density breadboards and unanodized, vacuum-compatible breadboards. Custom sizes of all breadboards are also available. Please contact Tech Support for more information.
Below are diagrams calling out the dimensions on each breadboard. Please note that the breadboards are not shown proportionally to one other.