A POS scale does more than weigh products. It helps ensure accurate pricing, speeds up checkout, and communicates directly with your point-of-sale system. Whether you run a grocery store, deli, coffee shop, cannabis dispensary, or other retail business, choosing the right POS scale depends on your weighing requirements, required certifications, connectivity, and POS compatibility.
This buyer’s guide walks through the key features to consider so you can select the best solution for your business.
Table of Contents
What Is a POS Scale?
A POS scale (point-of-sale scale) is a commercial weighing device that communicates directly with a point-of-sale (POS) system. Instead of simply displaying a product’s weight, a POS scale sends weight data to the POS software so prices can be calculated automatically based on the item’s weight.
POS scales are commonly used in:
- Grocery stores
- Delis and butcher shops
- Coffee shops
- Farmers markets
- Specialty food retailers
- Cannabis dispensaries
- Candy and bulk food stores
Unlike standalone scales, POS scales help reduce manual entry, improve pricing accuracy, and speed up the checkout process by integrating weighing directly into the sales transaction.
How to Choose the Right POS Scale
Selecting the appropriate POS scale involves various crucial factors that can significantly influence your business operations and customer interactions.
What will you be weighing?
The products you sell determine the type of POS scale you need. Businesses weighing bulk produce have different requirements than those selling coffee beans, candy, jewelry, or cannabis products. Consider the typical size, weight, and volume of the items you’ll be weighing each day.
How much weighing capacity do you need?
Choose a POS scale with a capacity that matches your inventory. Grocery stores and markets often require higher-capacity scales for produce and bulk goods, while coffee shops and specialty retailers typically need lower-capacity models designed for lighter products.
How accurate should your POS scale be?
Accuracy is essential when products are sold by weight. A highly accurate POS scale helps ensure customers are charged correctly, reduces pricing errors, and supports regulatory compliance. Businesses weighing small or high-value items should look for scales with finer measurement increments.
Does the size fit your workspace?
Counter space is valuable. A compact POS scale may be the best choice for coffee shops, convenience stores, or smaller retail counters, while larger checkout lanes can accommodate scales with bigger platforms and displays.
Is it easy for employees to use?
Look for a POS scale with a clear display, intuitive controls, and a design that fits naturally into your checkout workflow. The easier it is to operate, the faster employees can serve customers and the less likely they are to make mistakes.
Will it work with your POS system?
Compatibility is one of the most important considerations when selecting a POS scale. Verify that the scale supports your POS software and operating system before purchasing.
Many modern POS scales offer multiple connectivity options, including:
- USB-C for fast, reliable wired connections
- Bluetooth® for wireless communication with tablets and mobile POS devices
- Serial connections for legacy POS systems
Choosing a POS scale with multiple connectivity options helps protect your investment by making it easier to support future hardware and software upgrades.
Why Trade-Legal Certification Matters
If you sell products by weight, your POS scale may need to be trade legal. Trade-legal scales are certified to meet strict accuracy standards for commercial transactions, helping ensure customers are charged correctly and your business complies with applicable regulations.
In the United States, look for National Type Evaluation Program (NTEP) certification. NTEP-certified scales have been tested to meet the standards established by the National Conference on Weights and Measures (NCWM) and are approved for commercial use.
Businesses operating in Canada should choose a POS scale certified by Measurement Canada. This certification verifies that the scale meets Canada’s legal requirements for accuracy and performance when used in commercial transactions.
Selecting a POS scale with the appropriate certifications helps your business remain compliant, reduces the risk of pricing disputes, and provides confidence that every transaction is based on accurate, reliable weight measurements.
Benefits of Using a High-Quality POS Scale
A high-quality POS scale does more than measure weight. It helps improve accuracy at checkout, integrates with your POS system, and supports day-to-day business operations.
- Faster checkout: By sending weight data directly to your POS system, a POS scale eliminates manual entry, helping cashiers complete transactions more quickly and accurately.
- More accurate pricing: Precise weight measurements help ensure customers are charged correctly, reducing pricing errors and minimizing disputes at checkout.
- Better inventory control: Consistent weight measurements improve inventory tracking for products sold by weight, helping businesses monitor stock levels and reduce shrink or waste.
- Reliable POS integration: Modern POS scales connect with compatible POS software to automate pricing, simplify workflows, and reduce opportunities for human error.
- Regulatory compliance: Choosing a trade-legal POS scale with the appropriate certifications helps businesses meet commercial weighing requirements in the markets where they operate.
Which Star POS Scale Is Right for Your Business?
Star Micronics offers a range of NTEP- and Measurement Canada-certified POS scales designed for different industries and weighing applications. Whether you’re weighing produce, coffee beans, jewelry, or bulk products, there’s a POS scale built to match your business requirements.
mG-T Series: Best for Grocery, Retail, and General POS Applications
The mG-T Series is Star’s most versatile POS scale, making it an excellent choice for grocery stores, delis, farmers markets, specialty retailers, and other businesses that sell products by weight.
Key features include:
- High-precision weighing with capacities ranging from 12 kg to 60 kg, depending on the model
- Available USB-C, Bluetooth®, and Serial connectivity (mG-TUDB models)
- Easy integration with a wide range of POS systems
- Compact footprint for retail counters
- Optional customer-facing pole display (mG-TUDB models)
- NTEP and Measurement Canada certified models available
If your business needs a dependable everyday POS scale for retail transactions, the mG-T Series is the ideal starting point.
mG-TUDB Scales
Designed for precision and versatility, the mG-TUDB scales are a perfect fit for grocery self-checkout stations, produce sections and bulk item sales. With trade-legal certification for the U.S. and Canada, these scales offer Class III accuracy and seamless connectivity via Bluetooth, serial, or USB-C. Their large platter and optional pole display accessory ensure effortless setup with your POS system, making them ideal for a wide range of applications, from delis to farmer’s markets.
mG-S1501: Best for Coffee Shops and Specialty Foods
The mG-S1501 is designed for businesses that require precise measurements of lighter products, including coffee beans, loose tea, candy, spices, and specialty foods.
Key features include:
- Capacity of 0-300 g × 0.1 g and 300-1,500 g × 0.5 g
- USB and RS-232C connectivity
- Rechargeable battery for portable operation
- Stainless steel weighing pan
- NTEP certified
mG-S322: Best for Jewelry, Cannabis, and Precision Weighing
When maximum precision matters, the mG-S322 delivers highly accurate measurements for small, high-value products.
Ideal applications include:
- Cannabis dispensaries
- Jewelry stores
- Pawn shops
- Pharmacies
- Laboratories
Key features include:
- Capacity of 0-100 g × 0.01 g and 100-320 g × 0.1 g
- USB and RS-232C connectivity
- Stainless steel weighing pan
- NTEP certified
mG-S8200: Best for Shipping and Inventory
The mG-S8200 is designed for businesses weighing heavier or small-scale inventory, making it ideal for shipping stations, warehouses, grocery operations, and retail environments.
Key features include:
- Capacity of 0-500 g × 0.01 g and 500-8,200 g × 0.1 g
- USB and RS-232C connectivity
- Stainless steel weighing pan
- NTEP certified
Common POS Scale Applications
| Business Type | Recommended POS Scale |
|---|---|
| Grocery Stores | mG-T Series |
| Delis & Butcher Shops | mG-T Series |
| Coffee Shops | mG-S1501 |
| Candy & Bulk Food Retailers | mG-S1501 |
| Cannabis Dispensaries | mG-S322 |
| Jewelry Stores | mG-S322 |
| Pawn Shops | mG-S322 |
| Shipping & Fulfillment Operations | mG-S8200 |
| Farmers Markets | mG-T Series |
Find the Right POS Scale for Your Business
Choosing the right POS scale starts with understanding your business’s weighing requirements, required certifications, POS compatibility, and daily workflow. Whether you need a high-capacity scale for grocery items, a precision scale for jewelry or cannabis, or a versatile solution for retail, selecting the right model can improve pricing accuracy and simplify operations.
Star Micronics offers a complete portfolio of trade-legal POS scales designed for a wide range of industries and applications. Explore our POS scale lineup to compare features, capacities, and connectivity options, or contact our team for help selecting the best solution for your business.
Frequently Asked Questions About POS Scales
What is a POS scale?
A POS scale (point-of-sale scale) is a commercial weighing device that communicates directly with a point-of-sale system. It automatically sends weight data to the POS software so products sold by weight can be priced accurately during checkout.
Do I need an NTEP-certified POS scale?
If you sell products by weight, you may be required to use an NTEP-certified POS scale. NTEP certification verifies that the scale meets strict accuracy standards for commercial transactions in the United States. Businesses operating in Canada should look for Measurement Canada certification.
What businesses use POS scales?
POS scales are commonly used in grocery stores, delis, butcher shops, coffee shops, candy stores, farmers markets, cannabis dispensaries, jewelry stores, specialty retailers, and other businesses that sell products by weight.
How do I choose the right POS scale?
When choosing a POS scale, consider what you’ll be weighing, the required weight capacity and accuracy, available counter space, trade-legal certification requirements, connectivity options, and compatibility with your POS system.
Can a POS scale connect to a tablet or mobile POS?
Yes. Many modern POS scales support connectivity options such as USB-C, Bluetooth®, and Serial, making them compatible with tablets, mobile devices, and traditional POS systems. Always verify compatibility with your POS software before purchasing.
What's the difference between a POS scale and a precision scale?
A POS scale is designed to integrate with a point-of-sale system for commercial transactions. A precision scale focuses on measuring very small weight increments and is commonly used for applications such as jewelry, cannabis, pharmaceuticals, and laboratory work. Some precision scales can also function as POS scales when integrated with compatible software.
Are POS scales trade legal?
Not all POS scales are trade legal. If you sell products by weight, look for models certified by NTEP in the United States or Measurement Canada in Canada to ensure compliance with commercial weighing regulations.
Which Star Micronics POS scale is right for my business?
Star Micronics offers several POS scales designed for different applications. The mG-T Series is ideal for grocery and general retail, the mG-S1501 is well suited for coffee shops and specialty foods, the mG-S322 is designed for high-precision weighing in cannabis and jewelry applications, and the mG-S8200 is built for shipping and heavier-duty weighing tasks.
Original article written by the author and published on March 15, 2023.
