| jack |
|
|
|
|
| jib crane |
|
|
|
|
| joystick |
|
|
|
|
| junction box A box containing electrical devices (such as connectors, and perhaps also fuses and switches) pertinent to the arrival of the mains supply at one port, and its distribution around the rest of the site or building via each of the other ports |
|
|
|
|