Product information
What is the Linshang LS220 Paint Thickness Gauge used for?
The blue-bodied LS220 is a compact entry-level model in the Linshang family for quick single-handed bodywork scanning. On the battery-powered compact gauge, the built-in probe, two AAA batteries, and simple one-button operation allow for continuous use during long vehicle inspections by replacing batteries without waiting for charging.
In the blue body option, the device measures coating thickness on iron and aluminum bodies; it can recognize non-metallic surfaces but does not measure the coating thickness of plastic parts. In the LS220 workflow, screen warnings alone do not prove vehicle history; results are interpreted with repeated measurements on the same vehicle and physical inspection findings.
Vehicle and part coverage
On which vehicles is the Linshang LS220 Paint Thickness Gauge used?
A make-model software list, as found in diagnostic devices, does not apply to this product. Compatibility is determined by the part to be measured, the electrical system, the operating range, the probe or connection method, and the manufacturer's safety limits.
- Vehicle make
- Evaluated not by brand, but by the product's technical measurement or service limit.
- Vehicle model
- Further evaluated if the system to be measured and connection condition are within the technical range.
- Technical limitation
- 0–5000 µm measurement range, Built-in ruby probe, Fe/Al/FeZn and non-metallic surface recognition, Portable use with AAA batteries
- Diagnostic Scope
- Does not include vehicle control unit software or make-specific service menus.
- Measurement range and safe connection conditions are verified from the product's official technical documentation.
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What does the LS220 measure?
The LS220 measures the thickness of paint on a magnetic iron or steel substrate and the thickness of insulating coatings on a non-magnetic aluminum substrate without damaging the surface. On the battery-powered compact gauge, it switches between the Hall effect and eddy current principles depending on the surface type.
In the blue body option, the screen indicates Fe for iron, Al for aluminum, and FeZn for galvanized iron; non-metallic bodies are also reported. In the LS220 workflow, when putty containing metallic iron particles is detected, the device may provide two audible warnings and a visual alert based on the model's screen structure.
In the built-in probe design, this recognition is not a laboratory analysis that definitively diagnoses all types of putty or every repair method.
- Paint thickness on steel panels
- Coating thickness on aluminum panels
- Galvanized iron surface indicator
- Audible and visual warning for metallic putty
- Non-metallic body notification
Product details
Verified Technical Specifications
Linshang's current product page provides a range of 0–5000 µm for the LS220. On the battery-powered compact gauge, the resolution transitions through steps of 0.1 µm, 1 µm, or 10 µm depending on the measured thickness.
In the blue body option, accuracy in the 0–3000 µm section is listed as a maximum of ±(3%H + 2 µm), and in the 3000–5000 µm section, it is a maximum of ±(5%H + 2 µm); H refers to the reference thickness. In the LS220 workflow, the minimum substrate thickness for iron is 0.2 mm, and for aluminum, it is 0.05 mm.
In the built-in probe design, these values are manufacturer specifications; dirt, curvature, edges, temperature, and probe angle can affect field results.
- Measurement range
- 0–5000 µmUp to 5 mm of paint or coating
- Measurement interval
- 0.5 secondsManufacturer's current model value
- Minimum measurement area
- Ø25 mmSurface area required by the probe
- Probe
- Built-in integrated ruby probeWear-resistant ruby tip
- Screen
- 128 × 48 dot matrix LCDModel's reading display
- Operating temperature
- −20 °C to 50 °COfficial technical range
- Dimensions
- 101 × 62 × 28 mmMain unit size
- Weight
- 79 g, including batteryManufacturer value
Product details
Difference of this model within the family
When selecting the LS220, the probe, screen, power supply, and operating temperature are examined together.
Colors in the Linshang family are not just aesthetic choices: the blue LS220 has a battery-powered compact body, the orange LS236 has a dual screen and low-temperature support, the pink LS237 has a rechargeable battery with a rotating color screen, and the purple LS238 has a rechargeable body with a small external probe.
On the battery-powered compact gauge, therefore, model code and probe type are prioritized over color selection when ordering. In the blue body option, the 0–5000 µm range within the same family does not make the usage ergonomics of each device the same.
- LS220: Built-in integrated ruby probe
- Power supply: 2 × 1.5 V AAA alkaline batteries
- Display: 128 × 48 dot matrix LCD
- Operating environment: −20 °C to 50 °C
Product details
Initial setup and zero adjustment
The LS220 does not require multi-point user calibration; zero adjustment is performed on the correct surface plate. On the battery-powered compact gauge, the device is turned on away from metal, the probe is cleaned, and first placed perpendicular to the Fe plate. In the blue body option, if there is an aluminum panel on the vehicle to be measured, the Al or NFe plate is also used.
In the LS220 workflow, the zero adjustment is renewed when the body material changes, the device is not used for a long time, the battery or power status changes, and the ambient temperature differs significantly. In the built-in probe design, if the plate is scratched, dirty, or warped, a reference error may occur; a standard film is not used instead of the zero plate.
- 1. Clean the probe and plate
- 2. Turn on the device away from metal
- 3. Zero on Fe and, if necessary, Al plate
- 4. Take a reference film for control value
- 5. Repeat the process when the surface type changes
Product details
Correct measurement sequence on the vehicle
The panel must be dry and clean before starting measurement. The LS220 probe is placed perpendicular to the surface; the device is not tilted, slid with pressure, or lifted before a result is obtained. On the battery-powered compact gauge, the roof is useful for initial reference on most vehicles, but it is not assumed to be original on every vehicle.
In the blue body option, the hood, front fender, front door, rear door, rear fender, and trunk lid are measured in symmetrical order. At least three comparable points are selected on a panel. In the LS220 workflow, values near edges, folds, welds, embossments, and body gaps are noted separately.
- Prepare a clean and dry surface
- Apply the probe perpendicularly and with stable contact
- Select the same points on symmetrical panels
- Create a group of measurements instead of a single value
- Mark edge and fold results separately
Product details
How is the micrometer value read?
The number on the LS220 screen shows the total coating thickness in micrometers under the probe. The value is not directly labeled as "original," "painted," or "replaced." On the battery-powered compact gauge, factory, production line, panel material, and repair history can produce different results, even on the same model vehicles.
In the blue body option, first, the distribution within the same panel is examined, then the symmetrical panel, and nearby body parts. Fe and Al results are not combined into a single average.
In the LS220 workflow, the feZn indicator reports a galvanized iron substrate; for decisions on aftermarket or original parts, connection points, labels, and panel geometry are examined separately.
- Record the numerical µm value
- Record the surface type with the result
- Check the symmetrical panel difference
- Test putty warnings with surrounding measurements
- Indicate physical inspection findings separately
Product details
Bluetooth application and report layout
The manufacturer's current product family for the LS220 lists support for collecting measurement data and generating vehicle reports via the mobile application. On the battery-powered compact gauge, the phone's operating system, Bluetooth permission, and application version affect the connection.
In the blue body option, after the vehicle record is opened, panel names are selected sequentially; the measurement value, surface type, and control point are kept under the same vehicle. Automatic evaluation in the application does not replace physical inspection.
In the LS220 workflow, if personal plate, chassis, or customer information is added, the report is shared only with authorized personnel, and access to old records is checked upon device change.
- Check Bluetooth and application permissions
- Open a new report for each vehicle
- Match panel order with field workflow
- Preserve Fe, Al, and FeZn information
- Securely store personal vehicle data
Product details
Package contents and delivery check
The manufacturer's LS220 package list includes the main measuring device, Fe zero adjustment plate, Al or NFe zero adjustment plate, standard film, user manual, and certificate/warranty card.
On the battery-powered compact gauge, the inclusion of batteries, charging cable, carrying case, or other accessories in the delivery may vary depending on the sold package; only items listed in the live product offer are accepted as included. In the blue body option, upon opening the box, the model label, probe type, screen, power connection, and reference parts are compared with a photo.
In the LS220 workflow, if there are scratches on the probe tip, dents on the cable, or warpage on the plates, a record is created before measurement begins.
- LS220 main unit
- Fe zero adjustment plate
- Al/NFe zero adjustment plate
- Standard film
- User manual
- Certificate and warranty card
Product details
Scenario: measurement distribution on the same panel
The LS220 takes measurements from the front, middle, and rear sections of the hood. On the battery-powered compact gauge, if one of the points differs significantly from the others, the probe is lifted, surface cleanliness is checked, and the same area is measured again. In the blue body option, if the difference persists, additional values are recorded in a circle around the point.
In the LS220 workflow, it is written to the report whether the distribution occurred at a single point or over a wide area. In the built-in probe design, this method helps distinguish between accidental probe angles and actual coating differences; it does not solely determine if the panel has been replaced or the type of repair.
- Select front, middle, and rear points
- Repeat the diverging value in the same location
- Create an additional measurement ring around it
- Map the distribution on the panel diagram
Product details
Scenario: steel, aluminum, and galvanized body
The LS220 displays the Fe, Al, or FeZn indicator on the screen for panel changes. On the battery-powered compact gauge, when the hood is aluminum and the fender is steel, instead of directly comparing the magnitude of the two values, each surface is examined within its own reference group.
In the blue body option, when the feZn warning is observed, the device is zeroed on the appropriate plate, and the indicator is checked at several points on the same panel.
In the LS220 workflow, the non-metallic warning may appear in cases such as plastic, carbon fiber, the probe not seating properly on the surface, or the measurement area not conforming to the device's limits; probe position and surface structure are visually verified.
- Group Fe and Al results separately
- Verify the FeZn indicator at multiple points
- Check probe contact for non-metallic warning
- Verify panel material through physical inspection
Product details
Scenario: delivery check after bodywork
The body shop can measure different areas of the repaired panel and adjacent panels with the LS220 using the same plan. On the battery-powered compact gauge, the goal is not just to find a high or low number but to document the application distribution.
In the blue body option, measurement points are matched with the panel name in the work order; surface type, minimum, maximum, and repeat count are recorded. In the LS220 workflow, the device does not measure paint color, gloss, surface orange peel, panel gap, or connection quality.
In the built-in probe design, visual surface inspection, panel geometry, and technical records of the applied paint system are kept separate from the measurement report during the delivery check.
- Create a measurement plan for the repaired panel
- Use adjacent panels for comparison
- Report minimum and maximum values
- Check visual quality separately
Product details
Quick vehicle acceptance in the gallery
During vehicle acceptance with the LS220, a reference group is first taken from the roof; then the hood, fender, door, roof, and trunk lid are scanned in the same sequence. The single-button operation reduces menu navigation when moving from panel to panel. On the battery-powered compact gauge, if the application connection is used, the result for each area is transferred to the relevant vehicle record.
In the blue body option, the Fe, Al, or FeZn indicator on the screen is noted; different substrates are not mixed into a single average. In the LS220 workflow, if a high value is observed, two additional points are measured on the same panel to check if the surface difference is repeatable.
- Take a starting reference from the roof
- Maintain panel sequence throughout the vehicle
- Record Fe, Al, and FeZn results separately
- Check outlier values with two additional measurements
Product details
Continuous operation by replacing batteries in the field
Users who do not want to wait for internal battery charging on a busy inspection day can replace the LS220's two AAA batteries with a spare set. On the battery-powered compact gauge, after battery replacement, the device is turned on away from metal and zeroed again on the appropriate zero plate. If the ambient temperature has changed significantly, the same procedure is repeated.
In the blue body option, the portability of this model offers a practical workflow for gallery and mobile inspection teams checking multiple vehicles in short intervals; measurement discipline still relies on panel cleanliness, perpendicular contact, and repeated checks.
- Carry spare AAA batteries
- Perform zero adjustment after battery replacement
- Keep the probe tip clean and dry
- Generate separate reports per vehicle
Product details
Maintenance, storage, and usage limits
The LS220 probe makes point contact with the surface during measurement; the probe tip is not dragged across the panel. On the battery-powered compact gauge, the device is protected from liquids, solvents, strong magnetic fields, impacts, and extreme temperatures. Reference plates are stored in a dry case without rubbing against each other.
In the blue body option, for battery-powered models that will not be used for a long time, batteries are removed to prevent leakage risk; the battery of a rechargeable model is not left completely discharged. In the LS220 workflow, warranty period and service coverage are based not on the manufacturer's general claim but on the invoice of the sold package and the conditions of the live offer.
In the built-in probe design, user-induced impacts, crushed probe cables, or scratched reference parts can reduce measurement reliability.
- Do not drag the probe tip
- Store reference plates without scratching
- Keep away from liquids and solvents
- Protect the power source according to the model type
- Keep the invoice and serial number
