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Jennings CJ300

In Stock
Old Will's Price: $30.60

Jennings / JScale CJ-300 Table Top Digital Scale

Compact jewelry scale, with bright display
300 gram capacity x 0.1 gram resolution

Overview of the CJ-300 displaying the platform, backlit display, and operation keys.
"In A Nutshell"
Power 3 AAA Batteries (included)
AC adapter (not included)
Display Orange, Backlit LCD
Tare Feature Yes
Hold Feature No
Calibration External : 300g
Count Feature Yes
Platform Size 5.4" diameter
Scale Size 8.0" x 5.6" x 1.5"
Weighing Modes 4
Included Accessories
Large VibraKill Pad Three AAA batteries Protective cover
  • 7.7" x 7.0" VibraKill® Pad

  • Three AAA Batteries

  • Protective Cover

Weighing Modes
Mode: Capacity: Resolution:
Grams 300.0 g 0.1 g
Ounces 10.850 oz 0.005 oz
Pennyweights 192.90 dwt 0.1 dwt
Counting - Pieces
Product Details
  • Useful Weighing Bowl

    The CJ300 includes a weighing bowl for all those tough weighing jobs that require a container. The bowl holds approximately 750 milliliters, and is 8.4 inches by 6 inches.

  • Auto-Off Feature

    If ya have ever had the batteries in something run out because you forgot to turn it off, you'll realize what a blessing this feature is. The CJ-300 will automatically turn off after a few moments of inactivity.

  • Bright Backlit Display

    This table top scale has a fancy backlit display to help ya see your weight readings, even in dim lighting. Not only that! This digital scale's display will tell ya if ya pressed the tare button, and the unit you're weighing with.

  • Does This Thing Count?

    You bet it does! All ya need to do is weigh a sample amount of pieces, so the scale can know how much each piece weighs, then start counting. You'll be finished in no time.

  • Tare Feature

    The tare button on the front of this diet scale can be pressed to "zero out" the weight on the scale. You can then add more weight, and the display will only show the weight of the item you're adding. This sure is useful when ya want to get the weight of each ingredient for that delicious recipe.

  • Stainless Steel Platform

    This compact digital scale has a durable stainless steel weighing platform to make cleanup a breeze. Unlike gold or silver, stainless steel doesn't scratch easily and keeps its shine without rusting or tarnishing.

  • It Remembers The Last Unit Ya Used

    If your application needs weights in the same unit of measurement, (like ounces for instance), it can be a real pain if your scale always turns on ready to weigh in grams. It's a good thing the CJ-300 turns on displaying the unit of measurement you were using when ya turned it off.

  • Easy Calibration

    This scale comes factory calibrated and ready to use. Just in case ya need to calibrate it, the CJ300 comes with easy to follow calibration instructions. You'll just need to pick up a 300 gram calibration weight to get the job done.

  • Kill Those Vibrations With VibraKill®

    Did ya know that vibrations can cause a scale's reading to bounce around from one weight to another? Included with this digital scale is a VibraKill® Pad to keep vibrations, (caused by everyday items like, your fridge, nearby music, your washing machine, etc...) from messing up your weighing.


    If ya have a problem with this scale, just send it to Jennings' warranty center in Phoenix, Arizona. They'll fix or replace your scale and send it on its way back to ya within a week of receiving it. You should expect your replacement to arrive in about two to three weeks from the day you send the original off. Keep in mind that sometimes Jennings runs out of stock, which can cause a delay in the warranty replacement process.

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Customer Reviews: Back to top
Just what I was looking for!
This is a great scale. It's well made, accurate, and versatile. I needed a scale that not only weighs, but is capable of counting pieces. This scale does it, and does it well. I also bought the A/C adapter to complete the package. Everything was packaged nicely and arrived quickly. Thank you for the smooth transaction.
Reviewed by: Dale from Virginia Beach Beads - Virginia Beach, VA on 4/8/2014
Jennings CJ300
Received this item promptly and well packed. Great product at a great price!
Reviewed by: Steve from Miami, FL on 5/28/2013
Nice scale...
I cant say enough about Old Will Knott. Saw this same exact scale at a local "shop" for 89.99... i liked it, but for the price I thought i could do better. A quick Google search turned up Ol Will's site. Stellar. Cheap Money, fair shipping and the EXACT scale I wanted for 1/3 the price. Be sure to let it "sit" and warm up before use. I did not and found it would lose zero easily... now after being in the house for a few days... perfect. Great hopper, love how it floats on the scale. Doubles as a solid cover when the unit is not in use. The back-light screen turns itself on and off... off when the scale is resting at Zero, but then on again as soon as you add material to the hopper. Screen is easy to see, even when you've packed as much on the scale as you can. I really cant find anything about the scale or the transaction that I would consider to be bad. Buyers, buy with confidence. OldWillKnott will take good care of you, and the Jennings CJ-300 will not disappoint.
Reviewed by: JG from RI on 12/20/2012
Jennings CJ-300
Couldnt be happier with this scale..I fly electric RC helis..and the blades have to be weighed..in grams... Scale was delivered when promised..and packed perfectly.. I will order from here again shortly..movig on to bigger helis,and going to need a larger Thumbs up to oldwill...thanks again
Reviewed by: John Barnett from Philadelphia,Pa on 7/6/2012
Jennings CJ300
I could not of been happier with the serivice I received from OldWillKnottScales. It was the best!! And the Jennings CJ300 was exactly what I wanted. It has all the features I need without too many that I don't need and it works like a charm. Overall an excellent experience and I would highly recommend this scale and OldWillKnottScales to anyone!
Reviewed by: Cllyde Smith from Houston, Texas on 6/25/2012
Jennings CJ-300 digital scale
I came here on recommendation from coffee forums because I wanted a 0.1 gm scale to measure espresso. The scale is exactly as represented. Delivery just before Christmas was fast. I had a question on recalibration, called, and was picked up on the first ring. The advice was immediate from the person who picked up. I could not be happier.
Reviewed by: Keith Wiley from Foster City on 1/7/2012
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