From an older post
......Guitar pickups can be measured a few different ways: resistance (ohms K), inductance (Henries) and output in millivolts are all typical measurements. While any of these measurements can give you a ball park estimate of your pickup output (when compared to another identical pickup), they don’t tell the whole story. For that, you’d need to compare all three different measurements as well as components used and overall pickup efficiency. For example, the Starfire bridge pickup does have a lower resistance than the neck; however, it is wound with 41g wire. The neck pickup is wound with 42g wire. This difference in component alone will impact the resistance of the pickup. 41g is a thicker wire and as you increase your wire thickness, you decrease the amount of resistance.....