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My Weigh iBalance 300 (i300)

PN: MYWEIGH-i300-P78 MFR PN: SCMI300BLACK 5 stars 5 out of 5 stars read reviews (18) write a review read questions ask a question
In Stock
Old Will's Price: $29.91 Quantity

My Weigh iBalance 300 Digital Jewelry Scale

Tenth gram resolution and four different weighing modes
300 gram capacity x 0.1 gram resolution

"In A Nutshell"
Power3 AA Batteries (not included)
AC adapter (not included)
DisplayRed, Backlit LCD
Tare FeatureYes
Hold FeatureYes
Calibration FeatureYes
Count FeatureNo
Platform Size5.9" x 5.4"
Scale Size8.1" x 6.1" x 1.5"
Weighing Modes4

Included Accessories

  • 7.7" x 7.0" VibraKill® Pad
  • 3 AA Batteries

Weighing Modes

Mode: Grams Capacity: 300.0 gResolution: 0.1 g
Mode: Ounces Capacity: 10.580 ozResolution: 0.005 oz
Mode: Pennyweights Capacity: 192.90 dwtResolution: 0.05 dwt
Mode: Carats Capacity: 1500.0 ctResolution: 0.5 ct

Product Details

Programmable Auto-Off Feature If you've ever had your scale turn off on ya in the middle of important measurements, you'll realize what a blessing this feature is. You can program the i300 to turn off automatically, or to stay on until you turn it off yourself.

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 it's holding a weight, if ya pressed the tare button, and the unit you're weighing with.

Adjustable Display Angle This scale makes it easy to read your weight readings whether you're sitting right in front of the scale, or standing over it. All ya have to do is lift up the display to the angle that works for you.

Tare Feature The tare button on the front of this portable 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 if ya want to use this scale as a diamond or carat scale for weighing your jewelry pieces.

Hold Feature This feature lets ya remove weight from the scale and keep the weight reading on the display. This sure comes in handy if ya need to remove your item from the scale, or if you're having trouble seeing the weight display.

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 iBalance 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 i300 comes with easy to follow calibration instructions. You'll just need to pick up a 200 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.

30 YEAR MANUFACTURER'S WARRANTY! If ya have a problem with this scale, just send it to MyWeigh's 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 MyWeigh runs out of stock, which can cause a delay in the warranty replacement process.

Additional Images

Additional Accessories


Customer Reviews

great product - great company 5 stars

Recently purchased an i300 scale and adapter. The scale worked perfectly, but the port where the adapter would plug in was blocked. I made one phone call that was answered by a real person, who immediately shipped me another new scale, and told me to "throw the original scale in the trash. No questions, no returns, no shipping costs... just great service ! What a breath of fresh air !!

Reviewed by: charles maneage from walton hills ohio on (11/29/2015)
Evrything as promised! 5 stars

I recently bought " My Weigh iBalance 300 Digital Jewelry Scale" ! So far I'm very pleased with my choice! The delivery and all transaction was flawless , fast and outright pleasant! Thank you, that's a very rare nowadays! The scale looks solid so I'm hoping that it will serve me well!

Reviewed by: Wojciech Czajkowski from Hillsborough, North Carolina on (4/10/2015)
Great Product 5 stars

This is good scale that we use in manufacturing. We liked it so well we bought another one when a different model scale started having issues. Works great for the price.

Reviewed by: Mark from Salt Lake City on (5/19/2014)
Awesome scale 5 stars

I was looking for a scale that would stay on longer than 30 seconds. I measure various powders and liquids for my hair business and was very frustrated to find that most scales auto shut-off within 30 seconds. I chatted with the customer service department and they pointed me to several scales that can be manually adjusted to stay on longer (2 minutes-5 mins) This scale is extremely accurate and very easy to use. Plenty of options for weighing smaller items as well as being in my price range. Thanks for having such a great selection of scales! I love my new scale and has made my job so much easier and my clients very happy too.

Reviewed by: Brooke from Steamboat Springs, CO on (8/16/2013)
Worked great until it quit 3 stars

Excellent to use, battery powered, 0.1g precision, worked perfectly--until the day it didn't. The buttons are apparently not sealed, so be careful to keep the unit clean and dry.

Reviewed by: Tom Laffey from Roseville, CA on (4/11/2013)
Great little scale 5 stars

I bought the i300 scale and the 200g. calibration weight to determine the value of my gold and silver jewelry. The scale arrived in record time and was ready to go. I now have a catalog of the weight and value of my jewelry and will know what it is worth if I want to sell any of it, without having to depend on the opinion of a jeweler or broker.

Reviewed by: Ann from Martin County, Texas on (3/28/2013)
Works well 5 stars

I bought the scale for checking the weight of my grandson's Pinewood Derby car. I found it to work well and be ideally suited for that purpose. I also bought the 200-g cal weight which is probably essential with this scale.

Reviewed by: Dave from San Jose CA on (3/22/2013)
Great Product, Great Value 5 stars

I purchased this scale for weighing Cub Scout Pinewood Derby cars and it worked great! It is just the right size, easy to use, and is very accurate. It is now our "Official" Pack scale for the derby check-in. Thanks to Old Will Knott's for making the recommendation! It turned out to be exactly what we were looking for and based on the quality of construction I'm sure we will get years of good use out of it.

Reviewed by: Blake from Geneva, IL on (1/22/2013)
My Weigh iBalance 300 5 stars

This scale is accurate. I checked the accurcy with a 200 gram weight and thats exactly what the scale read. Its features and quality are worth more then the price.

Reviewed by: Robert Jordan from Levittown, Pa. on (12/15/2012)
Excellent scale for precise ingredient measurements 5 stars

I use this scale mainly for small homebrewing ingredient additions such as hops and priming sugar, and even tiny measurements such as those needed when adding brewing salts. I am very happy with the results! This scale is very simple to use and is well worth the cost.

Reviewed by: Grant from Broomfield, CO on (10/31/2012)
Great scale 5 stars

This is an easy to use and high quality item that I am getting a lot of great use from. Considering that batteries are included, the scale can be taken out of the package and used right away. I highly recommend it for your small scale weighing needs!

Reviewed by: Patrick Getty from Connecticut on (7/10/2012)
Perfect as usual 5 stars

I've bought many scales from Oldwillknott and everytime it's been shipped super fast and arrived intact. This is probably my fourth My Weigh scale and they all work great, very accurate and you can't beat the price.

Reviewed by: Noah from Washington on (6/27/2012)
Excellent product, excellent value 5 stars

At the suggestion of a wildlife rehabilitator, I bought three of these scales for my veterinary practice, since we treat so many small exotic mammals. They are easy to use, accurate, and inexpensive. I highly recommend them.

Reviewed by: Deborah Cottrell from Newberry, FL on (6/21/2012)
Easy to use 5 stars

Mainly got this to weigh discs for disc golf, and food items. Really easy to use, swithing from grams to ounces, tare weight, and operates quickly. The backlight feature comes in handy if the lighting is poor. Will Knott shipped the scale very quickly. Very pleased with the service and pricing.

Reviewed by: Rugball from San Diego on (6/20/2012)
Great scale 5 stars

Could not ask for a better balance and OldWillKnott got it to me quickly too. Very happy, great reads, and the functions to hold a weight and add more stuff if so helpful. It's also the perfect size.

Reviewed by: Will from Kansas City on (2/19/2012)
scale 5 stars

I think this is a wonderful scale,,it is especially good for weighing my little parakeets. I put a little porclean, or plastic round plate with a little food on it, set it to zero, let my budgies (parakeets)out in the morning and they jump on it to eat and I get a good reading of their weight without scaring them! For my cockatiels, I put a perch on the scale, set it to zero and I weigh them also,,I do this in grams.

Reviewed by: Susan Lobel from Federal Way, Wa on (1/29/2012)
ibalance(300) 5 stars

A very fine scale.Easy to use.Large platform. Very accurate! Thank you !

Reviewed by: Frank from Califon,N.J. on (12/26/2011)
Mr. 5 stars

Very good scale in all respects and Old Will Knott Sales shipped it promptly. I would recommend this scale and this seller to anyone wanting a accurate scale with an excellent guarantee and one that is not meant to be so tiny as to fit in their shirt pocket.

Reviewed by: W. ODonnell from Michigan, USA on (12/10/2011)

Questions and Answers

Q: I'm trying to recalibrate my scale and I can't get past step 2, it won't say cal. Any recommendations? Asked by: Marshall (7/30/2015) answer this question

A: Hey there Marshall,

The calibration instructions, as is the case with most instructional manuals, aren't written very well. Give this a try:

With the scale powered off, try HOLDING DOWN the "UNIT" button, PRESSING the power button, and then letting go of both buttons; as if you were walking up to the scale and turning it on, except you hold down the UNIT button when you do it. After the scale reads "CALE", place the 200 gram weight on the platform, count to three and press TARE.


Take care,

Answered by: Brandon (7/30/2015)
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