SMAKN® FL-2 500A 75mV DC current shunt resistor for amp Ampere panel meter

so what exactly is a shunt well a shunt is used to measure current for example the amp meter on the front of my power supply uses a shunt to measure the output current from the power supply so in a nutshell a shunt is just used for measuring current but what does a shunt look like exactly well for example this is an axial style shunt and this is a high current shunt rated to handle up to 50 amps and this rather ordinary looking wire jumper on the circuit board is also a shunned so shunts come in a wide range of varieties so what exactly defines as a shunt then well in a nutshell a shunt is nothing more than a conductor which has some value of resistance typically in the Milione range basically any conductor such as an ordinary resistor this wire rod or a length of copper wire could be made into an improvised shunt provided it has some resistance and we know the value of said resistance