SOLVED: 'Determine focal length of a concave mirror by two pin method. and if you know the answer of this question then please send me on fb : oneakashanand 7-f faft #
The Safety Pin Method
J-Clip - Tape and Pin Method
Principles of Positioning | MISUMI USA: Industrial Configurable Components Supply
Locating Pins and How they are used | MISUMI USA: Industrial Configurable Components Supply
Configure Your Machine for a Wireless Network Using the PIN Method of Wi-Fi Protected Setup™ (WPS) | DCP‑B7500D | DCP‑B7520DW | MFC‑B7710DN | MFC‑B7715DW