Quantity: When Will This Ship?
Penn Scale CM-101 Penn Scale CM-101 Penn Scale CM-101 - Class III NTEP Approved - PENN-SCALE-CM-101 Penn Scale - CM-101 - Side View Penn Scale - CM-101 - Rear View Penn Scale - CM-101 - Bottom View

Penn Scale CM-101 NTEP Certified Price Computing Scale

User friendly digital price calculating.
30 pound capacity x 0.01 pound resolution

"In A Nutshell"
PowerRechargeable battery pack &
AC adapter (included)
Display3 Screen, backlit LCD
Tare FeatureYes
Hold FeatureNo
NTEP Certificate04-101A1
PlatformStainless steel
Platform Size11.8" x 9.8"
Scale Size4.3" x 13.1" x 12.5"
Weighing Modes2

Included Accessories

  • Power Adapter / Charger
  • Rechargeable Battery

Weighing Modes

Mode:Capacity:NTEP Resolution:
(e value)
Mode: PoundsCapacity: 30.00 lbNTEP Resolution: 0.01 lb
Mode: KilogramsCapacity: 15.000 kgNTEP Resolution: 0.005 kg

Product Details

Class III NTEP Approved Legal For TradeThe National Conference on Weights and Measures certifies the CM 101 Legal for Trade with Certificate of Conformance number 04-101A1. So, you can count on getting accurate readings time after time. Perfect for stores and markets where items are sold by weight. Great for Farmer's Markets, produce, meat and more.

Automatic Price CalculatingWith this grocery scale, all ya have to do is enter the price of your product by pound and it will automatically calculate the price of what's on the scale.

Rechargeable Battery PackYou won't have to worry about searching high and low for a wall outlet to plug this retail scale into. The CM-101 has an internal rechargeable battery with up to 120 hours of battery life on a single charge!

Three Bright Backlit DisplaysYou'll have no problem at all seeing the weight displays on this pricing scale. The CM-101 displays have a bright backlight so ya can see your weights even in dim lighting.

Stainless Steel PlatformThe CM101 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.

Tare FeatureThe 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 an expansion tray to weigh your things, or if ya want to get separate weights of multiple items.

Easy To Clean Membrane KeypadYou won't have to worry about dust and dirt getting stuck under and around this scale's buttons...The CM has an easy to clean membrane keypad with accurately labeled keys for easy weighing.

1 YEAR MANUFACTURER'S WARRANTY!This retail scale is covered with a 1 year warranty from Penn Scales against defects in material and workmanship.

Product Questions

Number of questions: 4
My scale hasn't been used in awhile. Plugged it in and no power. How long should it take to charge the battery?
Asked by: Sue g. on March 22, 2020 10:14 AM
Hey Sue - it shouldn't take more than 24 hours to charge the battery. If the scale still isn't responding, then you may need to contact Penn Scale directly at 1.215.739.9644. You might just need a new power source.
Answered by: Pati62365 on March 23, 2020 9:34 AM
I have to get inspected a first time, here in WA State. If I buy this new and it fails calibration, the state says I have to pay to have a certified technician calibrate it. And then another fee for another inspection. My question: does Old Will Knotts use certain metal weights to calibrate before shipping? I would like an easy inspection. Thanks so much!
Asked by: chuckie on August 23, 2018 11:10 AM
Hey there Chuckie! All our scales are calibrated and tested by the manufacturer before getting shipped out. It's very rarely an issue, but sometimes when a scale is being delivered to an area with a drastic change in altitude, it can have an effect on the calibration. When folks are concerned with passing certification, we recommend that they purchase a weight to test themselves, or have a service come calibrate professionally before the certification date. Thanks for the great question! - Cletus N.
Answered by: Cletus24643 on September 6, 2018 3:05 PM
where can I get a replacement battery?
Asked by: erwin on July 11, 2017 4:50 PM
The replacement battery can be found here on our site. In the Search field, type in CM-101. You'll see several items, so just select the CM-101 Rechargeable Battery. Or you can copy and paste this link: https://www.oldwillknottscales.com/penn-cm-101-b-rechargeable-battery.html
Answered by: Pati62365 on July 18, 2018 1:11 PM

Can I take Penn scale to the farmer market without power cord . Because farmer market do have power outlet to use.

Asked by: Jim on June 12, 2016 5:00 PM
Hey There Jim! You sure can. This scale includes a rechargeable battery pack, so just charge it up, and you're good to go!
Answered by: Cletus (OWKS) on July 12, 2018 3:17 PM
Does this scale come calibrated?
Answered by: Kman82 on July 11, 2018 5:04 PM

Product Reviews

Overall Customer Rating:
from 23 customer reviews.
Best scale for farms
I have a jam business and rely on accurate weight measurements for my recipes. My first scale blew out from a power surge after an ice storm. I wanted an exact replacement and got it at the best price on the internet. Excellent service, very happy.
Reviewed by: M. Lawrence from Maine on 12/22/2020
Mark Moore owner of St. Joe Shrimp Company
We have ordered several times from this company and have never been disappointed. Very good products and very good prices. We enjoy doing business with this company.
Reviewed by: St. Joe ShrimpCompany from on 10/21/2020
Awesome scale
Super easy purchase, amazingly fast delivery, awesome product. Easy to use.
Reviewed by: Shilohfarmfl from Valkaria, FL on 9/13/2020
Seasonal roadside market
Originally bought two of these scales for my seasonal roadside market. Liked them so well bought another 2. Great scale for a good price, holds battery power for complete day. Sales support was great and delivery was fast. Have not had to contact the company for any repair service but thinking they would be just as helpful. Would recommend this scale and company.
Reviewed by: Irma's Family Farm Fresh Vegetables from Sterling Heights, MI on 9/2/2020
Does the job
I have used this scale so far at three farmers markets. It’s done fine. Easy to use. Makes things quicker as you can easily input the price per pound and it figures the total. I now own two of them. The only problem is that if they go out of calibration, around here it costs almost as much to get them worked on as it does to buy a new scale.
Reviewed by: Janet from Kentucky on 8/10/2020
We use this at our market and it's reliable. At one point years ago I accidentally turned it on while it had something on the plate and it stopped being accurate. I called the company and one of their engineers called me back from his cell phone after hours to troubleshoot the scale - turned out to be an easy process.
Reviewed by: Partnership Farm from on 6/3/2020
cm-101 penn scale
Nice scale but it should of come with a dust cover. The cheaper model scale comes with a dust cover
Reviewed by: penn cm-101 from on 6/1/2020
Great scale
The perfect scale for both the wholesale and retail legs of my produce farm.
Reviewed by: Greg from Pennsylvania on 5/1/2020
Great set of scales. They were calibrated and were certified the next day.
Reviewed by: Daniel from Stuart Oklahoma on 2/14/2020
Great for the price
I do not know what to say...inexpensive, easy to use and it works great.

I had to call the manufacturer to ask a question and they actually answered the phone!
Reviewed by: Stephen from on 11/26/2019
Good scale
Delivery, product and price were excellent.
Reviewed by: Joihn from on 10/18/2019
Robert; Oak Hill Grocery
The Old Will Knott scale has a very easy to read display screen, easy to operate and goes into sleep mode when not in use. Great scale, has not had any issues.👍
Reviewed by: Robert from on 9/11/2019
I purchased it as I am a vendor at farmer's market. Got certified, no problem, and looking forward to using it this year.
Reviewed by: Mary from Missouri on 4/23/2019
I like that the weight and price is readable on both sides. It was easy to setup and looks like it will be relatively simple to operate. We will be getting it certified soon. Most of our usage will be in the summer months to weigh vegetables and blueberries for research/demonstration trials and as a backup scale for our local farmers' market.
Reviewed by: Susan from Kentucky on 4/10/2019
Product is working great. Very pleased with purchase so far!
Reviewed by: PJ Merrill Seafood, Inc. from on 1/25/2019
Good scale, wish it had printer port
It is a good simple calculating scale. I just wish it had some kind of printer connection
I knew it didn't but seems like all caculating scales should have an output.
Reviewed by: Edub from TX on 11/27/2018
class 111 scale
Works great. very happy.
Reviewed by: LINDA from PA on 10/5/2018
Scale purchase
We are happy with our purchase. Thank you for your prompt shipping.
Reviewed by: Mary from Redding, CA on 9/24/2018
Satisfied Customer
very satisfied. Delivery was fast and prices were good. will buy from here again
Reviewed by: St. Joe Shrimp Company from Port St. Joe, Florida on 9/12/2017
I am very happy with the scale. It is just what we needed for our small farm store. so easy to use. Turn it on, type in the price per pound and place the produce on the scale and the weight and cost display on both the front & back side of the scale. The unit is light weight and easy to move around. The company sent it next-day shipping for free!
Reviewed by: Annette from Callicoon, NY on 6/14/2014
love the scale
i received my scale and I really like it thanks
Reviewed by: karen from ringgold la on 3/16/2013
Penn Scale CM-101
I have been using my new scale for my farm fruit vending business and I must say it is an excellent scale. I love the tare weight option as I use packing boxes and this just makes it so easy to calculate weight and price. The price is great for such a great product. I highly recommend this scale.
Reviewed by: Anne Atkins from Fallbrook, CA on 9/20/2012
Penn Scale from Old Will Knott Scales
Have been using my Penn Scale for a few weeks at Farmer's Markets and love it. I wanted a no fuss/no muss scale and this one has been perfect for us. Weigh and calculate ... so easy to use, light weight and soooo portable. I don't leave the house without it. Couldn't be happier! Thanks Old Will Knott your online store made my purchase one of the easiest transactions to date. Gotta go now and sell some more tomatoes!
Reviewed by: Jacque Bottom from Cuba, MO on 7/15/2012

We know you have a choice when you buy scales online. Just know that when you buy digital scales from Old Will, it's always a "Worry Free Deal".

help desk software