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Jennings Mack 100 (Discontinued)

PN: JSCALE-MACK100-P78 MFR PN: SCMACK100 5 stars 5 out of 5 stars read reviews (1) write a review no questions yet ask a question
The Mack 100 has been discontinued by My Weigh and we're all out. Check out the PalmScale 8 300 instead, or browse all of our pocket scales.

Jennings / JScale Mack 100 Digital Precision Scale

Innovative dual display design.
100 gram capacity x 0.01 gram resolution

"In A Nutshell"
PowerAC adapter (not included)
4 AA (included)
DisplayBlue backlit LCD
Tare FeatureYes
Calibration FeatureYes
Platform Size3.5" diameter
Scale Size7.0" x 6.5" x 2.5"
Weighing Modes8

Included Accessories

  • 7.7" x 7.0" VibraKill® Pad
  • 100 Gram Calibration Weight
  • Expansion Tray
  • Four AAA Batteries

Weighing Modes

Mode: GramsCapacity:100.00 gResolution:0.01 g
Mode: GrainsCapacity:1543.2 gnResolution:0.1 gn
Mode: Troy OuncesCapacity:3.2150 oztResolution:0.0005 ozt
Mode: OuncesCapacity:3.5274 ozResolution:0.0005 oz
Mode: PennyweightsCapacity:64.3 dwtResolution:0.1 dwt
Mode: CaratsCapacity:500.00 ctResolution:0.05 ct
Mode: TicalsCapacity:6.120 t mgResolution:0.001 t
Mode: MilligramsCapacity:100,000 mgResolution:10 mg

Product Details

Two Weight Displays? That's right. Jennings designed this jewelry scale with two, bright blue, LCD weight on the front, and one on the back. So whether you load the scale from the front or the back, you won't have a problem seeing your weights.

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 Mack-100 will automatically turn off after a few moments of inactivity, saving battery power and money.

Bright Backlit Display This digital scale has a fancy, blue, backlit display to help ya see your weight readings, even in dim lighting.

Hinged Protective Windscreen When you're weighing with high precision scales like this one, even the tiniest breeze can interfere with weight readings. This Jennings scale comes with an attached windscreen to keep out those pesky drafts. The protective cover is hinged, just press the button on the side to release it and lift it out of the way.

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 Mack turns on displaying the unit of measurement you were using when ya turned it off.

It Has WeighMeter™ Technology! If ya put too much weight, (more than the capacity of the scale) on any scale it can cause permanent damage. Unfortunately, most scales warn ya of an overload after it's too late. Luckily this digital scale comes with WeighMeter Technology to tell ya when you're coming close to the maximum capacity. This will save ya from overloading your scale and damaging it beyond repair.

Easy Calibration To make sure ya keep getting the best weight readings from your scale, it helps to calibrate it from time to time. This jewelry scale has instructions to make calibrating your scale easy. The Mack even comes with the 100 gram calibration weight ya need to use.

Tare Feature The tare button on the front of this digital 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 items you're adding. This sure is useful when ya want to use the included expansion tray to weigh your things, or if ya want to get separate weights of multiple items.

Liquid Level Indicator And Leveling Feet This very handy feature helps you quickly and easily get your scale nice and level. Adjust the scales foot pads by screwing them in or out until the bubble in the liquid level indicator is centered, and you're off to the races. A level scale is so important for getting the most accurate weight readings.

Four Useful Accessories The Mack 100 comes with great accessories. Use the VibraKill® Pad under the Mack to keep vibrations from messing up your weight readings, and the calibration weight to keep it nice and accurate. If you're looking to use the Mack as a diamond scale or carat scale, the little expansion bowl is perfect for weighing those teeny tiny jewelry pieces. You'll even get a set of batteries so ya can start weighing as soon as ya get it.

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.

20 YEAR MANUFACTURER'S WARRANTY! 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.

Additional Images

Customer Reviews

expected better 5 stars

Ok so i didnt spend $200, but i wouldve expected better quality for what i did spend. I purchased a $30 scale two years ago elsewhere thats still goin strong. Whats wrong with this one..the top feels very flimsy...the on off button has a recurring albeit rare short or something. The battery cover does not close tightly. The shipment took almost a month to reach me. When i chkd on it the order was inexplicably cancelled. Customer service was helpful and dispatched a new order.

Reviewed by: b lee from District of Columbia on (1/4/2012)
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