RIKEN Precision Flat Level for Machine Tool Calibration and Geometry Inspection Malaysia

RIKEN Precision Flat Level for Machine Tool Calibration and Geometry Inspection Malaysia

Introduction

Machine tool calibration and geometry inspection are important activities in precision manufacturing, CNC machining and industrial equipment maintenance.

Factories operating CNC lathes, milling machines, machining centers and precision machinery often need to verify that their equipment meets specified geometric and operational requirements.

One aspect of machine inspection is precision leveling verification.

A high sensitivity precision level helps technicians measure small inclination differences at designated machine reference surfaces.

The RIKEN KEISOKUKI RFL-1502 and RFL-2002 Precision Flat Levels are Japanese instruments featuring 0.02 mm/m sensitivity.

They are intended for machine assembly, installation and centering applications.

MTM Precision Sdn Bhd supplies both models in Malaysia.

This guide explains the differences between precision level calibration, machine leveling verification and machine tool geometry inspection, including the role of RIKEN precision levels in industrial metrology.

1. What Is Machine Tool Calibration?

The term machine tool calibration is often used in manufacturing to describe activities intended to evaluate or verify machine performance against specified requirements.

Depending on the application, this may involve several different measurements.

Examples include:

Machine Positioning Accuracy

Axis Repeatability

Machine Geometry

Spindle Runout

Axis Straightness

Axis Squareness

Machine Leveling Condition

Machine Alignment

These characteristics are not measured using a single instrument.

A complete machine tool verification program may require different measuring systems and inspection procedures.

For example, a precision level measures inclination, while a laser interferometer may be used for specified linear positioning measurements.

A precision flat level cannot independently calibrate or verify every characteristic of a CNC machine.

2. What Is Machine Tool Geometry Inspection?

Machine tool geometry inspection involves evaluating the geometric relationships between machine components and movements.

Depending on the machine type, important characteristics may include:

Straightness

The straightness of a machine axis or reference movement.

Squareness

The perpendicular relationship between designated machine axes.

Parallelism

The parallel relationship between specified machine surfaces or movements.

Spindle Geometry

Relevant geometric characteristics associated with spindle movement or alignment.

Machine Bed Condition

The geometric condition of the machine structure and reference surfaces.

Machine Leveling

The inclination and installation conditions specified by the manufacturer.

A precision flat level may assist with certain leveling-related checks.

However, other geometry measurements generally require additional instruments and procedures.

3. Precision Level Calibration vs Machine Leveling Verification

These two activities are frequently confused.

Precision Level Calibration

Precision level calibration evaluates the measuring instrument itself.

The calibration process establishes the relationship between the instrument's indication and reference inclination values under specified conditions.

Depending on the calibration method, the result may include measurement errors and uncertainty.

Machine Leveling Verification

Machine leveling verification evaluates the inclination of specified machine reference surfaces.

A suitable precision level is used to take measurements.

The readings are then compared with the machine manufacturer's requirements.

Key Difference

Precision level calibration checks the instrument.

Machine leveling verification checks the machine's leveling condition.

A calibrated instrument does not automatically mean that a machine is correctly leveled.

Likewise, a machine that appears level does not establish that the measuring instrument is correctly calibrated.

4. Machine Leveling Verification vs Machine Geometry Calibration

A third important distinction is the difference between leveling verification and broader geometry inspection.

ActivityMain ObjectiveTypical InstrumentPrecision Level CalibrationEvaluate the level's indicationSuitable Calibration SystemMachine Leveling VerificationMeasure machine inclinationPrecision Flat LevelAxis Straightness InspectionEvaluate straightnessAppropriate Geometry InstrumentAxis Squareness InspectionEvaluate perpendicularitySuitable Geometry Measuring SystemSpindle Runout InspectionMeasure runoutDial Indicator or Suitable InstrumentPositioning Accuracy VerificationEvaluate axis positioningSuitable Positioning Measurement System

The actual instrument selection depends on the required measurement range, accuracy and applicable procedure.

RIKEN RFL-1502 and RFL-2002 are precision flat levels, not complete CNC machine calibration systems.

5. RIKEN RFL-1502 and RFL-2002 Specifications

The RIKEN KEISOKUKI Precision Flat Level Series includes instruments designed for precision machinery applications.

SpecificationRFL-1502RFL-2002ManufacturerRIKEN KEISOKUKIRIKEN KEISOKUKICountry of OriginJapanJapanInstrument TypePrecision Flat LevelPrecision Flat LevelNominal Length150 mm200 mmSensitivity0.02 mm/m0.02 mm/mNet Weight1.8 kg2.3 kgApplicationPrecision Machine LevelingPrecision Machine Leveling

RIKEN RFL-1502

The 150 mm body may be useful for smaller suitable reference surfaces.

RIKEN RFL-2002

The 200 mm body may be preferred when a longer reference surface is available.

Both models provide the same specified sensitivity.

Instrument length alone does not establish measurement accuracy.

6. What Does 0.02 mm/m Sensitivity Mean in Metrology?

Both RIKEN models have 0.02 mm/m sensitivity.

This describes a small angular inclination.

An inclination of 0.02 mm/m corresponds to a height difference of 0.02 mm over a horizontal distance of one metre.

Equivalent Inclination Table

Horizontal DistanceEquivalent Height Difference100 mm0.002 mm150 mm0.003 mm200 mm0.004 mm500 mm0.010 mm1,000 mm0.020 mm

For example:

0.02 mm/m × 0.2 m = 0.004 mm

This means that an inclination of 0.02 mm/m is mathematically equivalent to a height difference of 0.004 mm over 200 mm.

These values illustrate slope.

They are not guaranteed instrument accuracy or machine leveling tolerances.

Sensitivity Is Not Accuracy

Sensitivity describes the response of an instrument to a change in inclination.

Accuracy describes how closely a measurement agrees with the reference value.

Measurement uncertainty expresses uncertainty associated with the measurement result.

All three concepts matter in precision metrology.

7. Why Calibration Matters for Precision Levels

A precision level may be used to make decisions about machinery installation and adjustment.

If the instrument's indication is incorrect, technicians may make unsuitable adjustments.

Calibration can help establish confidence in the instrument's measurement characteristics.

Factors That May Affect Measurement Reliability

Instrument Damage

Improper Handling

Changes in Instrument Adjustment

Unsuitable Measuring Surfaces

Temperature Differences

Vibration

Incorrect Reading Methods

For critical measurements, the instrument's calibration status should be considered.

The appropriate calibration interval depends on factors such as usage, handling, operating conditions, historical stability and the organization's measurement requirements.

A manufacturer's sensitivity specification does not replace calibration or measurement verification when these are required.

8. What Should a Precision Level Calibration Report Include?

The exact contents depend on the calibration provider, calibration method and customer requirements.

A calibration report may include:

Instrument Identification

Manufacturer

Model

Serial number or unique identification

Calibration Information

Calibration date

Measurement method

Reference standards used

Environmental conditions where relevant

Measurement Results

Reference values

Instrument indications

Indication errors where applicable

Measurement Uncertainty

The reported uncertainty associated with the calibration results.

Traceability Information

Information supporting metrological traceability to recognized measurement references.

Calibration Provider Details

Identification of the organization performing the calibration.

Where accredited calibration is required, customers should verify that the laboratory's accreditation scope covers the relevant instrument and measurement parameters.

Do not assume every calibration certificate is issued under an accredited scope.

9. How to Use a Precision Level During Machine Geometry Inspection

A precision level may be used as part of a machine inspection procedure.

The following describes general principles.

Actual measuring positions and acceptance criteria must follow the machine manufacturer's requirements or applicable inspection method.

Step 1 - Review the Inspection Procedure

Identify the required measurements, reference positions and tolerances.

Step 2 - Confirm Instrument Suitability

Check that the precision level has appropriate sensitivity, dimensions and calibration status.

Step 3 - Establish Suitable Measurement Conditions

Follow the required machine safety procedures.

Minimize excessive vibration and temperature instability.

Step 4 - Identify the Reference Surface

Use the machine manufacturer's designated measuring surface or approved fixture.

Step 5 - Clean the Measuring Surface

Remove chips, dust, oil residue and other contamination.

Step 6 - Position the Precision Level

Place the RIKEN RFL-1502 or RFL-2002 carefully on the reference surface.

Step 7 - Record the Instrument Indication

Observe the reading according to the instrument manufacturer's instructions.

Record the measuring position and orientation.

Step 8 - Repeat at Required Positions

Where specified, take measurements at additional reference positions.

Step 9 - Compare with Requirements

Evaluate the readings against the applicable inspection tolerances, considering relevant measurement uncertainty.

Step 10 - Complete Additional Geometry Tests

Perform the other geometric measurements required by the machine inspection procedure.

A satisfactory leveling result does not establish that every machine geometry characteristic is within tolerance.

10. Machine Tool Calibration Instruments - What Does Each Measure?

Industrial metrology uses different instruments for different inspection tasks.

Measuring InstrumentTypical Measurement ApplicationPrecision Flat LevelInclination and machine levelingDial IndicatorDisplacement, runout and comparisonDial Test IndicatorSmall displacement comparisonPrecision StraightedgeStraightness-related inspectionPrecision SquareSquareness-related referenceLaser InterferometerSpecified positioning measurementsElectronic LevelInclination measurementsAutocollimatorSmall angular measurementsBallbar SystemCertain CNC contouring performance tests

The correct instrument depends on the inspection method.

For example, a RIKEN Precision Flat Level may support machine leveling verification, but it does not replace a laser interferometer for positioning accuracy measurements.

11. Can a Precision Level Detect Machine Bed Twist?

A precision level may help investigate machine bed twist in certain machine designs.

For example, a CNC lathe manufacturer may specify measurements at multiple reference positions.

Differences in inclination readings can help technicians evaluate the machine's geometric condition.

However, several factors must be considered:

Correct measuring positions

Instrument orientation

Machine support conditions

Surface condition

Measurement repeatability

Manufacturer's inspection method

A single level reading cannot confirm that a machine bed is free from twist.

Machine geometry verification may require additional measurements.

12. Calibration and Inspection After Machine Relocation

Machine relocation can change equipment installation conditions.

After moving a CNC machine or precision production machine, technicians may need to verify:

Foundation Condition

Confirm that the new installation site meets the machine manufacturer's requirements.

Machine Support

Check the support arrangement and adjustment.

Machine Leveling

Use a suitable precision level according to the installation procedure.

Machine Geometry

Complete the required geometric inspections.

Operational Performance

Perform the specified commissioning and functional checks.

A RIKEN RFL-1502 or RFL-2002 may be used for suitable leveling measurements during this process.

However, the level does not replace the complete machine reinstallation and verification procedure.

13. Common Mistakes in Machine Tool Calibration

Mistake 1 - Treating Machine Leveling as Complete Machine Calibration

Machine leveling is only one possible part of the inspection process.

Mistake 2 - Confusing Instrument Calibration with Machine Verification

Calibration evaluates the measuring instrument, while machine verification evaluates the machine against specified requirements.

Mistake 3 - Using an Instrument with Unsuitable Sensitivity

The instrument must meet the measurement requirements.

Mistake 4 - Ignoring Measurement Uncertainty

Measurement uncertainty may affect conformity decisions near tolerance limits.

Mistake 5 - Using Incorrect Reference Surfaces

Measurements should follow the specified inspection procedure.

Mistake 6 - Assuming a Calibration Certificate Guarantees Machine Accuracy

A calibration certificate relates to the identified measuring instrument and reported calibration results.

Mistake 7 - Assuming Every Certificate Is Accredited

Accreditation status and scope should be verified when required.

Mistake 8 - Skipping Additional Geometry Inspection

A machine may meet leveling requirements while other geometric characteristics remain outside tolerance.

14. Machine Tool Geometry Inspection Checklist

The following general checklist can help organize inspection activities.

Inspection ItemPurposeMachine IdentificationIdentify the equipmentInspection ProcedureEstablish applicable requirementsInstrument SuitabilityConfirm appropriate specificationsCalibration StatusReview instrument measurement confidenceEnvironmental ConditionsEstablish suitable inspection conditionsReference SurfacesIdentify correct measuring positionsLeveling MeasurementsRecord machine inclinationGeometry MeasurementsCheck specified geometric characteristicsMeasurement RecordsDocument resultsAcceptance EvaluationCompare results with requirements

The checklist should be adapted to the machine type and inspection procedure.

15. Applications in Malaysian Calibration and Precision Engineering Industries

The RIKEN Precision Flat Level Series is relevant to precision machinery inspection and industrial metrology applications throughout Malaysia.

Selangor and Kuala Lumpur

CNC machining workshops, machine tool service companies, calibration providers and precision engineering factories may require high sensitivity leveling instruments.

Johor

Manufacturing facilities and machinery installation contractors may use precision levels during equipment setup and inspection.

Penang

Precision engineering, electronics manufacturing and industrial maintenance companies may require suitable metrology instruments.

Melaka and Negeri Sembilan

Machine tool maintenance and industrial equipment inspection activities may involve precision leveling.

Perak and Kedah

Manufacturing facilities and machine tool workshops may require precision flat levels for suitable machinery applications.

MTM Precision Sdn Bhd supports industrial product enquiries across Malaysia, including Pahang, Kelantan, Terengganu, Perlis, Sabah and Sarawak.

16. Frequently Asked Questions About Machine Tool Calibration

Q1. Can a precision flat level be used for machine tool calibration?

It can support machine leveling and certain geometry-related inspection procedures, but it cannot independently calibrate the complete machine.

Q2. What is the difference between precision level calibration and machine leveling?

Precision level calibration evaluates the measuring instrument.

Machine leveling evaluates the machine's inclination and installation condition.

Q3. What is the sensitivity of RIKEN RFL-1502?

The RIKEN RFL-1502 has 0.02 mm/m sensitivity.

Q4. What is the sensitivity of RIKEN RFL-2002?

The RIKEN RFL-2002 also has 0.02 mm/m sensitivity.

Q5. Does 0.02 mm/m mean 0.02 mm accuracy?

No. It describes inclination sensitivity.

Q6. Can a precision level measure CNC axis positioning accuracy?

No. Positioning accuracy requires an appropriate measurement method and instrument.

Q7. Can a precision level detect machine bed twist?

It may support bed twist inspection when used according to the machine manufacturer's specified procedure.

Q8. Does a calibrated precision level guarantee correct machine leveling?

No. Correct measurement methods and machine-specific acceptance criteria are also required.

Q9. Is an accredited calibration certificate always required?

Requirements depend on the customer's quality system, contract, applicable standards and intended use.

Q10. Where can I buy RIKEN Precision Flat Levels in Malaysia?

Contact MTM Precision Sdn Bhd for RFL-1502 and RFL-2002 product enquiries.

17. Buy RIKEN Precision Flat Level for Machine Tool Inspection Malaysia

If your company requires a high sensitivity precision flat level for machine tool inspection, MTM Precision Sdn Bhd supplies Japanese RIKEN instruments.

RIKEN RFL-1502 Precision Flat Level

Length: 150 mm

Sensitivity: 0.02 mm/m

Net Weight: 1.8 kg

Origin: Japan

RIKEN RFL-2002 Precision Flat Level

Length: 200 mm

Sensitivity: 0.02 mm/m

Net Weight: 2.3 kg

Origin: Japan

Typical Applications

Machine Tool Leveling Verification

CNC Machine Installation

Precision Machinery Inspection

Machine Relocation

Industrial Equipment Maintenance

Machine Geometry Inspection Support

Precision Engineering Applications

Contact MTM Precision for current product pricing and stock availability.

18. Contact MTM Precision Sdn Bhd

MTM Precision Sdn Bhd

Showroom & Service Centre

No. 29-1 & 29-2, Jalan Bandar 18,

Pusat Bandar Puchong,

47160 Puchong, Selangor, Malaysia.

Telephone: 03-8080 7172

WhatsApp: +6016-660 7346

Email: mtmpre@yahoo.com

Website: www.mtmpre.com.my

For RIKEN RFL-1502 and RFL-2002 Precision Flat Level Malaysia enquiries, contact our team through WhatsApp.

Please send us your machine model, required level sensitivity, reference surface dimensions or inspection application details.

Our team can assist with product selection and quotation requests.

If your application requires a calibration certificate, please specify the required calibration scope and documentation when enquiring so that availability can be confirmed.

Conclusion

Machine tool calibration and geometry inspection involve several different measurement activities.

A precision flat level is useful for measuring small inclination differences during machine leveling and certain geometry-related inspections.

However, precision level calibration, machine leveling verification and complete machine geometry inspection are different processes.

The RIKEN RFL-1502 and RFL-2002 Precision Flat Levels both feature 0.02 mm/m sensitivity for precision machinery applications.

The RFL-1502 has a 150 mm body, while the RFL-2002 has a 200 mm body.

Both models are supplied by MTM Precision Sdn Bhd in Malaysia.

For product information, quotations and assistance selecting a suitable RIKEN Precision Flat Level, contact MTM Precision today.