The video begins by introducing the components of a polygraph. The first component discussed is the pneumograph, also known as the rubber corrugated tube. It is approximately 10 inches long and is responsible for recording changes in the subject's breathing. The pneumograph pen is 5 inches long.

Next, the galvanograph is introduced, which records the skin resistance of the subject to a small amount of electricity. It consists of finger electrode plates with retainer bands and connecting blocks. Its pen is 7 inches long, making it the longest, because it is the most sensitive component and requires a longer pen to avoid collision with other pens during recording.

The cardiograph, or cardiosphygmograph, is another vital component. It records changes in blood pressure and pulse rate. It includes a pump to inflate the system and a hose connecting to a blood pressure cuff. Its recording pen is 5 inches long, similar to the pneumograph.

The video then demonstrates the attachment process, starting with the pneumograph. Before attachment, the subject must have completed the pre-test phase, including understanding their rights and signing a waiver. The pneumograph is attached first, with the lower band placed on the abdomen and the upper band on the chest. For women, the top band goes above the chest; for men, at chest level. Attaching the abdominal pneumograph first avoids confusion or entanglement with other components.

After the pneumograph, the galvanograph (galvanoskin resistance) is attached. Its plates are placed on the fingertips of the subject, typically one on the ring finger and one on the index finger, with a finger gap between them to prevent short-circuiting.

The final component to be attached is the cardiosphygmograph. It is placed on the arm opposite to where the galvanograph was attached. For a female subject, the air pressure should be 40, and for a male subject, it should be 60.

The detachment process is the reverse of the attachment: the cardiosphygmograph is removed first, followed by the galvanograph, and then the pneumographs (upper first, then lower). Before the examination, subjects must remove all metal objects or jewelry to prevent interference with the recordings.