Figure 1 from Control of and experimentation on an active dual-mode twisted string actuation mechanism | Semantic Scholar
Figure 2 from Development of a robotic finger with an active dual-mode twisting actuation and a miniature tendon tension sensor | Semantic Scholar
Milwaukee M18 FUEL 16 in. String Trimmer Attachment for Milwaukee QUIK-LOK Attachment System 49-16-2717 - The Home Depot
Figure 3 from Control of and experimentation on an active dual-mode twisted string actuation mechanism | Semantic Scholar
newtonian mechanics - How are the number of strings in a pulley system quantified? - Physics Stack Exchange
String-based flapping mechanism and modularized trailing edge control system for insect-type FWMAV - DuHyun Gong, DaWoon Lee, SangJoon Shin, SangYong Kim, 2019