If you want to perfect this brewing technique, a scale can help you achieve a high level of consistency. You can measure both the amount of coffee you use and the weight of the final liquid coffee.
You’ll need to measure the grinds beforehand by themselves, and then put the entire setup (including mug and dripper) onto the scale. The scale should have an option to reset or “tare” it, which will reset it from zero. From here you just need to add the right amount of water.
You’ll need about 177 mL (177 grams) of water for every 10.6 grams of coffee. Here’s a handy table that scales up the ratio of coffee to water for any amount, and has different units of measurement.
There are a lot of scales out there, but there are two in particular that I can recommend for you.
Jennings CJ-600 Digital Scale
First, the Jennings CJ-600 Digital Scale is available for a reasonable price. It has a taring function (the way you reset the weight to zero after popping your cup or dish onto the tray) and an auto-off setting that turns it off automatically after a certain amount of time. This scale is simple and easy to use. It does what you need with the minimum of bells and whistles. It’s also received positive reviews, mostly four and five stars and many positive comments on the accuracy of the scale.
Secondly, for the more discerning coffee connoisseur is the Acaia Scale ($12). A scale completely devoted to the art of coffee making. With an app that hooks up to multiple mobile platforms, it provides brewing times, weight measurements and different programs for various types of coffee. It also provides the option of saving all of your coffee programs, allowing you to replicate that perfect cup every time. This scale is incredibly accurate, with an easily used taring function that links straight up to the timer.