Remove all the elements with patch tool and clone brush.
step 2 of 5
Make copy of right side of box and flip horizontally and place at the other end of box.
step 3 of 5
Close cut center of scale. Now squeeze it so it is thin.
Clean up rod but close cutting it and size on background. Duplicate and move to other side of box.
step 4 of 5
Pick brush for electricity. Use 100% white as your color/tone.
step 5 of 5
On a separate layer create your electricity with the brush that I showed earlier.
Duplicate layer and place under electricity layer then blur.
When both layers are activated you will get the result shown in the final frame.
Now you can play with levels to create the illusion of a glowing electric current.