Trusted Precision Weighing Solutions on the West Coast.
Give us a call:
Give us a call:
The decision between renting and buying a truck scale comes down to one question: What does your operation actually need?
A permanent truck scale is a significant investment not just in the equipment itself, but in the concrete foundation, site preparation, electrical work, and ongoing maintenance. For a temporary operation, a seasonal need, or a business that’s not ready to commit to a permanent installation, renting a portable truck scale can be the smarter financial decision.
At LSI Scales, we’ve been providing portable truck scale rentals to California businesses for over 50 years. From Fresno to Los Angeles, from the agricultural heartland to the ports, we’ve helped businesses get the weighing capability they need—when they need it, where they need it.
Browse our full range of equipment scale rentals to see what’s available for your operation.
The term “DOT compliant“ gets thrown around a lot. But what does it actually mean when you’re renting a portable truck scale?
The Federal Highway Administration (FHWA) sets baseline weight limits for Interstate highways. Every driver and fleet operator needs to know the three key numbers: 80,000 pounds is the maximum gross vehicle weight for a 5-axle combination on Interstate highways. Single axle limits are typically 20,000 pounds, and tandem axles are 34,000 pounds.
These limits aren’t suggestions they’re federal law. Exceeding them can result in significant fines, safety violations, and increased liability.
For commercial operations selling by weight in the USA, your scale must meet specific standards to be considered legal for trade. This means the scale must be NTEP-certified and comply with NIST Handbook 44 standards.
NTEP (National Type Evaluation Program) certification ensures the scale has been tested and approved for commercial use. NIST Handbook 44 provides the technical specifications, tolerances, and requirements for commercial weighing devices.
Critical distinction: Non-legal-for-trade equipment can serve internal checks but cannot be the basis for customer billing when selling aggregate, grain, scrap, fuel, or other materials by weight.
California has its own set of requirements. In California, commercially used scales and meters must be legal for trade. A legal-for-trade device must generally have a Certificate of Approval issued by the California Type Evaluation Program (CTEP) or a Certificate of Conformance from NTEP.
Before any new type of weighing or measuring device can be sold or used for commercial purposes in California, it must be evaluated and approved by the California Department of Food and Agriculture, Division of Measurement Standards (DMS).
Additionally, persons that sell, rent, install, service, or repair commercial weighing and measuring devices are required to be licensed with the Division of Measurement Standards.
According to California Highway Patrol (CHP) policy, portable scales must be accurate within two percent of true weight. HAENNI portable scales must be certified to within one percent of true weight.
For enforcement purposes, when using portable scales (wheel-load weighers), a scale allowance factor may be applied. The current accuracy of such scales is generally within 2 or 3 percent of actual weight, but in no case shall an allowance in excess of 5 percent be applied.
Any device used to weigh or measure products or services for direct sale must be an approved type and annually registered with the County Department of Weights and Measures. Scales and meters used commercially must be inspected and registered before being placed in service.
For more detailed information about certified scales in California, including registration and compliance requirements, visit our dedicated California page.
Available Every Day, All Day, to assist with weighing solutions and provide prompt, lasting results.
In the event of a weighing emergency, our team is ready to respond promptly and initiate immediate solutions.
We utilise the latest tools and equipment to deliver professional weighing solutions to all clients.
Our team is made up of highly skilled and experienced experts, all of whom provide excellent service.
I’ve talked to enough fleet managers and contractors to know that most people don’t care about the technical details—they just want to know: Will it work?
There are two main types of portable truck scales:
Axle scales weigh one axle at a time. The truck drives onto the scale pads, the weight of that axle is recorded, and then the truck moves forward to weigh the next axle. The total vehicle weight is calculated by summing the individual axle weights. Axle scales are typically more affordable and easier to deploy.
Full-length portable scales weigh the entire vehicle in one pass. The truck drives onto the scale platform, and the total weight is recorded immediately. Full-length scales generally offer higher accuracy and are more suitable for legal-for-trade applications.
Understanding the difference between these two options is important. Our axle scales page provides more detail on the specific capabilities of each type.
The core technology is surprisingly simple. Load cells either hydraulic or strain-gauge sensors convert the weight of the vehicle into an electrical signal. Digital indicators display the weight, store data, and can generate tickets or reports.
One of the biggest advantages of portable scales is how quickly they can be deployed. Unlike permanent scales that require weeks of site preparation, concrete pouring, and electrical work, portable scales can often be operational within hours. They require minimal infrastructure—just a reasonably flat, stable surface.
For businesses considering a more permanent solution, our scale installation services provide a comprehensive overview of what’s involved in setting up a fixed weighbridge.
California is a big state with diverse industries. Here’s where portable truck scales are most valuable:
The Central Valley is one of the most productive agricultural regions in the world. During harvest season typically July through October truck traffic increases dramatically. Farms need to weigh incoming crops, outgoing shipments, and everything in between.
A portable truck scale allows a farm operation to handle the seasonal surge without investing in a permanent scale that would sit idle for most of the year. It’s weighing capability on demand.
For more specific agricultural weighing solutions, explore our agricultural farm scales page, which covers the unique requirements of farm operations.
Construction sites are temporary by nature. A project might last six months, a year, or two years but eventually, the equipment moves on.
Installing a permanent weighbridge for a temporary construction site doesn’t make financial sense. A portable truck scale provides the weighing capability needed for material verification, load management, and compliance—without the permanent infrastructure commitment.
California’s diverse climate creates unique challenges for weighing equipment. Here’s what you need to know:
Summer Heat & Thermal Expansion
In the Central Valley, summer temperatures regularly exceed 100°F. Metal expands in heat. Your scale’s load cells, the steel platform, the junction boxes—everything gets bigger.
A 20°F temperature swing can cause a 0.1-0.3% drift in your readings. On a 40,000-pound truck, that’s 40 to 120 pounds. Over a hundred trucks a day, that’s thousands of dollars in potential losses.
Summer is also dust season. Dry conditions mean dust and debris can accumulate under the scale platform, causing mechanical binding and inaccurate readings.
Winter Rain & Moisture
Winter brings rain—and moisture is the #1 enemy of electronic scales. Rain can corrode metal parts, short-circuit electrical components, and cause erratic readings.
In colder parts of California, freezing temperatures can physically damage scale components. Rain can also cause soil movement under the scale foundation, leading to chronic calibration errors.
Spring Temperature Swings
Spring brings rapid temperature swings—cold mornings, warm afternoons. This constant expansion and contraction causes metal fatigue in load cells over time. Spring winds can also exert force on vehicles and the scale platform, skewing weight measurements.
Fall – The Most Stable Season
Fall offers the most stable conditions for weighing—moderate, consistent temperatures, low humidity, no extreme heat or rain. This is why many businesses schedule their calibration and maintenance for fall.
Regional Variations
California’s climate varies significantly by region:
- Central Valley: Extreme summer heat, agricultural harvest peaks
- Coastal: Higher humidity, moderate temperatures
- Southern California/Inland: Heat, dust, dry conditions
- Northern California: More rain, cooler temperatures
Understanding these environmental factors is essential for maintaining accuracy and protecting your equipment investment. Implementing a solid preventive maintenance program can help mitigate the effects of these seasonal challenges.
Note: The following are illustrative industry scenarios based on real operational patterns in California.
Scenario 1: Central Valley Harvest Season
Situation: A Central Valley agricultural operation faces a 3-month harvest season with 50+ trucks per day needing weighing. Their permanent scale is undersized for the seasonal peak.
Problem: Overloaded trucks risk DOT fines and safety issues. Manual weighing is slow and inaccurate. The cost of installing a second permanent scale isn’t justified for a 3-month seasonal need.
Solution: A portable full-length truck scale is rented and deployed on-site within 24 hours.
Implementation: The scale is positioned at the facility entrance, calibrated by LSI Scales technicians, and operational the same day. The farm’s staff is trained on basic operation.
Result: Accurate weight verification for every truck, DOT compliance, streamlined operations, and no capital expenditure for a permanent scale they’d only use 3 months a year.
Business Impact: Avoided overweight fines (up to $6,000 per violation), improved load efficiency, protected brand reputation, and maintained operational continuity during peak season.
Scenario 2: Construction Site Compliance
Situation: A construction company working on a multi-year infrastructure project in California needs on-site weight verification for aggregate deliveries.
Problem: Trucks arriving from multiple suppliers. Need to verify weights for billing accuracy and DOT compliance. Site is temporary—no permanent infrastructure.
Solution: Portable axle scale rental for spot-checking and verification.
Result: Accurate billing, DOT compliance, reduced disputes with suppliers, and the flexibility to relocate the scale as the project progresses.
Business Impact: Reduced material costs through accurate billing, avoided fines, improved supplier relationships, and no permanent infrastructure investment.
If you’re facing a similar challenge, contact us to discuss your specific weighing requirements.
Even the best portable truck scale will lose accuracy over time. Here’s why—and what you can do about it.
Scales lose accuracy gradually. It’s not a sudden failure—it’s a slow drift. A little here, a little there, and before you know it, your scale is off by enough to cost you money.
Causes of measurement drift include:
Every calibration performed by LSI Scales is NIST-traceable—meaning there’s an unbroken chain of calibrations linking your scale back to the national standard at the National Institute of Standards and Technology.
This traceability is what makes your calibration certificate legally defensible. When California’s Division of Measurement Standards comes knocking, that traceability is what keeps you out of trouble.
At minimum, portable truck scales should be calibrated before each deployment. For longer rentals, calibration should be scheduled regularly—typically every 3-6 months, depending on usage and environmental conditions.
Every portable truck scale we rent is:
For more information about the importance of accuracy in commercial weighing, read about our weight calibration services and how they ensure compliance and reliability.
EXCELLENT
Based on 23 reviews
Posted on Google
David NinoTrustindex verifies that the original source of the review is Google.
Highly recommended. Their technicians are highly skilled, efficient and professional. Outstanding scales service, installation, troubleshooting and repairing.Posted on Google
William MurphyFrank and the staff at LSI scales are the best. The Rice Lake truck scales are second to none. Would recommend them to anyone needing professional sales and service at a fair price.Posted on Google
Stephen BissellAbsolutely the best customer service.Posted on Google
Peggy BissellLSI Scales are phenomenal Superb customer service And the owners work side by side with employees Very generous, supporting the local 4H & FFA.Posted on Google
Patrick DC (Cadillac Jack)Great people, great service, fair pricesPosted on Google
Katie RemwoltI can’t say enough about what a great company LSI Scales is! They pride themselves in outstanding customer service and pay attention to every detail! The owners are the most honest and hard working people I’ve ever met!!!Posted on Google
Scott BendaGreat work.. always on time and budgetPosted on Google
Shane PealGenuine honest people!Posted on Google
Matt MayesUsed them at a plant I managed will always be my first and last call for scales and scale work
We’ll break down the cost of our services and ensure that you get the best price for your situation.
Our team can be with you in no time to deliver expert Weighing Solutions with speed and efficiency.
We take an environmentally conscious approach while still delivering affordable solutions to clients.
Past clients have been left wholly satisfied by our efforts and have left stellar reviews of our services.
Reach out to our experts today and take advantage of our reliable Weighing services. Call now at (559)446-1022 or fill out the contact form below.
Decision Framework
Ask yourself these questions:
| Consideration | Rent a Portable Scale | Buy a Permanent Scale |
|---|---|---|
| Duration of Need | Short-term (<1 year) | Long-term (>1 year) |
| Site Permanence | Temporary/multiple sites | Fixed location |
| Truck Volume | Low to moderate | High, continuous |
| Capital Available | Limited | Available |
| Seasonal Demand | Yes (harvest, construction) | No (year-round) |
| Regulatory Need | DOT compliance, occasional | Legal-for-trade, continuous |
| Infrastructure | Limited | Available for permanent install |
When Renting Makes Sense
Renting a portable truck scale is the right choice when:
- You only need weighing capability for a specific project or season
- You’re not ready to commit the capital for a permanent installation
- Your site is temporary or you need to move between locations
- You need a backup or emergency solution
- You want to test weighing operations before committing to a purchase
When Buying Makes Sense
Purchasing a permanent truck scale is the right choice when:
- You have a fixed, permanent location
- You have high, continuous truck volume
- You have the capital for the investment
- You need legal-for-trade weighing year-round
For a deeper analysis of this decision, read our blog post on truck scale rental versus purchase, which explores the financial and operational considerations in detail.
50+ Years of Experience
We’ve been in the commercial weighing industry for over five decades. We’ve seen the technology evolve, the regulations change, and the industry grow. There’s not much we haven’t encountered.
500+ Industrial Clients
From mining operations to logistics fleets, from farms to factories—over 500 businesses trust us with their weighing needs.
California-Based
We’re headquartered in Fresno and serve the entire state of California. We understand the local industries, the regulatory environment, and the unique challenges of operating in California.
NIST-Traceable Calibration
Every calibration we perform is traceable to national standards. You get legally defensible documentation that stands up to scrutiny.
ISO 9001 Certified Process
Our work is governed by ISO-compliant services, ensuring consistency, quality, and trust.
98% First-Time Fix Rate
Most issues are resolved on the first visit. No multiple trips. No extended downtime.
24/7 Emergency Service
Scales don’t break down at convenient times. Neither do we. Available 24/7, 365 days a year.
Factory-Trained Technicians
Our technicians are factory-trained professionals with decades of combined experience. Learn more about our team of experts.
Give us a call:
Give us a call:
We calibrate truck scales for businesses across California’s key industries:
👉 See our industries page for more details.
A portable truck scale that meets federal DOT weight measurement standards and, for commercial transactions, NTEP certification and NIST Handbook 44 compliance. In California, it must also have CTEP approval.
Yes, if they have CTEP (California Type Evaluation Program) approval or NTEP (National Type Evaluation Program) certification. Always verify the specific rental equipment's certification
Portable axle scales typically offer 0.5% to 1% accuracy. Full-length portable truck scales can achieve accuracy comparable to permanent weighbridges when properly installed and calibrated. CHP requires portable scales to be accurate within 2% of true weight.
Portable scales can often be delivered and fully operational within a day. Permanent scales take weeks or months
Yes, rental periods are flexible—from days to months, depending on your needs.
Rental agreements typically include terms for damage. Discuss with your rental provider.
If you're operating the scale for commercial transactions, the scale must be registered with the County Weights & Measures office. If you're renting from a licensed provider like LSI Scales, they handle certification.
Heat causes thermal expansion, moisture causes corrosion, and dust affects mechanical components. Regular maintenance and seasonal calibration are essential.
“I’ve relied on LSI Scales for years. Their quick repairs and accurate calibration are why our measurements are always on point. They’re essential to our precision scales!”
“LSI Scales excels in precision for our mining site. Their heavy-capacity scales and expert calibration guarantee pinpoint accuracy. They’ve been key to our operation’s success for years.”
“LSI Scales is our go-to for peak season rentals. Their vast inventory and quick delivery have saved us countless times. We rely on LSI Scales, and they always deliver!”
LSI Scales has been a game changer for our livestock operations in Fresno. Their quick calibration services ensure our scales are always accurate, which is crucial for our business. Highly recommend their expertise!
As a logistics coordinator in Phoenix, I rely on LSI Scales for peak season rentals. Their vast inventory and prompt delivery saved us during a critical time. They truly understand the needs of their clients!
For our mining operations in Las Vegas, LSI Scales has provided exceptional service. Their heavy-capacity scales guarantee pinpoint accuracy. Their expert technicians are always ready to assist!
LSI Scales has been our trusted partner for industrial scales in Portland. Their scale installation and maintenance services are top-notch, ensuring our operations run smoothly. A reliable choice for any business!
In Seattle, LSI Scales stands out for their commitment to precision. Their quick repair services have kept our operations efficient, and their knowledgeable staff is always a pleasure to work with!
Reach out to our experts today and take advantage of our reliable Weighing services. Call now at (559)446-1022 or fill out the contact form below.
Don’t wait until your scale fails an inspection. Don’t wait until a customer disputes a weight. Don’t wait until the fines start piling up.
Get a free rental quote today.
📞 Call us: (559) 446-1022
📧 Email: Contact us
📍 Serving: California, Arizona, and the US West Coast
Available 24/7, 365 days a year.
Give us a call in Arizona :
Give us a call in Fresno: