You are here

Jennings CJ4000 Scale

/  shares
Price MatchGift Returnable

We've looked long and hard for a scale that we can recommend for our avid manual brewing friends. The scale needed to have a high weight capacity, fast response time and precision calculations, and the ability to disable the auto-off feature to ensure the scale would not shut off mid-brew. The Jennings CJ4000 is the first scale we have offered that meets all of these requirements. With a 4000 gram capacity, accuracy to .5 gram, and the ability to disable the auto-off feature, the Jennings scale is the perfect companion to manual brewing.


  • Reads in Grams, Ounces and Pounds
  • Weight displayed in .5 gram increments
  • 4000g Maximum Weight Capacity
  • Auto-Off feature can be disabled to allow for uninterrupted brewing.
  • Tare and Zero Function
  • Tactile Rubber Keypad
  • Cover that doubles as a Bowl with Pour-Spout
  • Large LCD Display
  • Round, Stainless-Steel Platform
  • Runs on Batteries or Included AC Adaptor
  • 3 AAA batteries included
  • Advanced Parts-Counting Feature
  • 20 Year Warranty

*Image is a representation. Actual product may vary based on model, size, and options selected.


Jennings Scale Company is known for their high quality and precision scales. They offer a wide selection of scales suitable for many environments. Prima Coffee specifically sought to carry Jennings for their precision and ability to disable the auto-off feature on their scales, making them perfect for manual coffee brewing.
Jennings CJ4000 Scale is rated 5.0 out of 5 by 3.
Rated 5 out of 5 by from Best Scale For The Money For $40, this scale exceeds expectations. Specifically, I'm glad it does not have an auto-off function. That frees me up while I'm brewing to focus on brewing, not keeping the scale on. It is a little bigger than I like for a personal use scale, but the rest of the functionality makes it worthwhile. I also like that you can flip the casing over on top and brew on that. I don't know how many scales I've ruined by an accidental overflow, bump of a full mug or mis-placed water stream. This keeps it relatively idiot-proof. I do wish you could turn off the beep.
Date published: 2013-12-12
Rated 5 out of 5 by from Very quick! I noticed my old scale was kinda slow but I adjusted to it in my pour but I never realized how much of a difference that a scale with quick weight reading would make such a big difference in the way I pour. This scale is not much more money than you would probable spend on any other scale for coffee and it is definitely worth all the buzz I hear about it. And for those of you like me who don't keep batteries on hand, it has an wall plug adapter that you can switch to.
Date published: 2014-03-29
Rated 5 out of 5 by from Great scale at a great price! I bought this scale kind of on a whim for my new Chemex. I was going to spend a bit more time researching different scales, but when I read a write up from Prima about this being a great scale, especially for beginners, I figured I'd give it a shot. I'm so glad it did. It's a great product, easy to use, and very affordable. I would recommend for both beginners and experienced coffee makers.
Date published: 2014-01-10

What is smallest amount it measures accurately

Asked by: LesS
Hey, Les. This scale has a .5g accuracy. If you're measuring very small amounts 1g-5g, this scale may not have ideal accuracy for you, and we'd recommend something like the Hario Drip scale which has 2x the accuracy. It is, however, great for brewing coffee when .5g accuracy doesn't have a noticable impact on a 20g-30g dose.
Answered by: Rfelb
Date published: 2014-08-01

How crucial is calibrating with 4000g weight? Is scale accurate before calibration?

Asked by: techie
Hello. Your scale was calibrated in the factory, and should have arrived to you in perfect working order. these scales don't typically develop issues, but you'll know if your scale starts giving wonky measurements down the road.
Answered by: Rfelb
Date published: 2014-08-01

What is the diameter of the weighing surface?

Asked by: nosaj97
Hello. The diameter of the weighing surface is 5.4".
Answered by: Rfelb
Date published: 2014-08-01
/  shares