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Jennings Mack 100

In Stock
Old Will's Price: $57.70

Jennings / JScale Mack 100 Digital Precision Scale

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

The Mack-100 by Jennings
"In A Nutshell"
Power AC adapter (not included)
4 AA (included)
Display Blue, Backlit LCD
Tare Feature Yes
Calibration Feature Yes
Interface None
Weighing Hook No
Platform Size 3.5" diameter
Scale Size 7.0" x 6.5" x 2.5"
Weighing Modes 8
Included Accessories
VibraKill Pad expansion bowl calibration weight Four AA batteriesr
  • 7.7" x 7.0" VibraKill® Pad

  • Expansion Tray

  • 100 Gram Calibration Weight

  • Four AA Batteries

Weighing Modes
Mode: Capacity: Resolution:
Grams 100.00 g 0.01 g
Grains 1543.2 gn 0.1 gn
Troy Ounces 3.2150 ozt 0.0005 ozt
Ounces 3.5274 oz 0.0005 oz
Pennyweights 64.3 dwt 0.1 dwt
Carats 500.00 ct 0.05 ct
Ticals 6.120 t 0.001 t
Milligrams 100,000 mg 10 mg
Product Details
  • Two Weight Displays?

    That's right. Jennings designed this jewelry scale with two, bright blue, LCD weight displays...one 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

    This very handy feature helps you quickly and easily get your scale nice and level. A level scale is 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 off 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.


    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.

Recommended Accessories: Back to top
MACK AC Adapter
Average Rating 1 Review(s)
MACK AC Adapter
Old Will's Price: $6.90

Customer Reviews: Back to top
expected better
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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