3D Printing Materials Selection Guide, a white paper from PROTOLABS.

Learn more about 15 types of domestic electrical plug and socket types in use worldwide. IEC | World Plugs Worldwide Electrical Outlet List Electrical Plugs and Sockets Dimensions and Drawings Travel Adaptors International Wiring Devices

The ColorCalculator software is a standalone program developed by OSRAM to allow a user define a broad range of desired photometric values and a broad range of LEDs. Do you have a need to make your own CIE plots including MacAdam ellipses? This free tool makes the job done easily. Here is a screenshot.