Voltcraft bs 18hd usb endoscope voltcraft bs 18hd usb p the voltcraft bs 18hd usb is an endoscope that is used in combination with a windows reg based computer with a free usb 2 0 interface the endoscope is a visual aid for optical troubleshooting and the inspection of voltage free facilities and equipment p p the flexible gooseneck has a camera fitted on the top of the device and this can be moved to positions that are normally inaccessible by other means four white leds also allow