A chuck subassembly of the extensible stable clamping device includes two clamping jaw bodies and two clamping jaw heads. The two clamping jaw bodies are curved towards the inner sides and are symmetrically disposed; after the two clamping jaw bodies are closed, a clamping gap is formed between the clamping jaw bodies; the clamping gap can accommodate a clamped object; each clamping jaw head is located at a top of the clamping jaw body and extends a distance in a direction where the clamping jaw body extends out to form a plate shape; and after the two clamping jaw bodies are closed, the two clamping jaw heads are attached to each other to improve the clamping stability.

A system includes a magnetic device and an emplacement tool. The emplacement tool includes at least one magnetic rotating member rotatable about a first axis and configured to adhere to a ferrous surface. The emplacement tool also includes a friction fit head configured to hold the magnetic device between internal surfaces of the friction fit head on opposing sides. The emplacement tool further includes a coupler connected to the at least one magnetic rotating member. The coupler is configured to attach to the friction fit head such that the friction fit head extends along a second axis different than the first axis.

A system includes a magnetic device and an emplacement tool. The emplacement tool includes at least one magnetic rotating member rotatable about a first axis and configured to adhere to a ferrous surface. The emplacement tool also includes a friction fit head configured to hold the magnetic device between internal surfaces of the friction fit head on opposing sides. The emplacement tool further includes a coupler connected to the at least one magnetic rotating member. The coupler is configured to attach to the friction fit head such that the friction fit head extends along a second axis different than the first axis.