Myzox CL-28 CL-36 Auto Level for Finished Floor Level FFL Checking Malaysia
Myzox CL-28 CL-36 Auto Level for Finished Floor Level FFL Checking Malaysia
Finished Floor Level (FFL) is an important elevation reference in building construction. Contractors need reliable level control to ensure that floors, entrances, external platforms, drainage interfaces and other building elements correspond with the required project elevations.
The Myzox CL-28 and CL-36 Auto Levels provide a practical optical solution for transferring benchmarks and checking elevation differences during building construction.
The Myzox CL-28 provides 28X magnification and ±2.0 mm accuracy for 1 km double-run leveling, while the Myzox CL-36 provides 36X magnification and ±1.0 mm accuracy.
MTM Precision Sdn. Bhd. is an authorized distributor of Myzox in Malaysia, supplying professional surveying instruments and accessories for construction and engineering applications.
What Is Finished Floor Level?
Finished Floor Level, commonly abbreviated as FFL, refers to the specified elevation of a finished floor relative to the project's reference datum or benchmark.
Depending on the project, FFL information may appear on:
Architectural drawings
Structural drawings
Civil engineering drawings
Construction setting-out information
Site reference plans
Contractors should always use the approved project drawings and established survey control when transferring FFL.
Why Is FFL Important?
Floor elevation affects many other parts of a building.
Incorrect floor levels can potentially create problems with:
Door thresholds
Staircases
Ramps
External pavements
Drainage
Building entrances
Connecting structures
Internal floor transitions
Accurate elevation control should therefore begin before the finished floor itself is constructed.
How Can an Auto Level Help Check FFL?
An optical auto level establishes a horizontal line of sight.
With a leveling staff and known benchmark, the operator can determine the elevation of another point.
A simplified procedure may involve:
Identify the approved benchmark.
Set up the Myzox Auto Level on stable ground.
Take a backsight reading on the benchmark.
Determine the Height of Instrument.
Position the leveling staff at the required floor location.
Take a staff reading.
Calculate the elevation.
Compare the measured elevation with the required FFL.
Actual site procedures should follow the project's surveying and quality-control requirements.
Example of an FFL Calculation
Assume the project benchmark elevation is:
100.000 m
The backsight reading is:
1.500 m
Therefore:
Height of Instrument = 100.000 + 1.500
Height of Instrument = 101.500 m
If the required Finished Floor Level is:
100.200 m
The theoretical staff reading at FFL would be:
101.500 − 100.200 = 1.300 m
This simplified example demonstrates how a horizontal line of sight can be used to transfer an elevation reference.
Myzox CL-28 for Building Construction
The Myzox CL-28 provides:
Magnification: 28X
Objective Aperture: 36 mm
Minimum Focusing Distance: 0.4 m
1 km Double-Run Leveling Accuracy: ±2.0 mm
Self-Leveling Range: ±15′
Horizontal Circle: 360°
Weight: Approximately 1.3 kg
For routine building construction and floor-level checking, the CL-28 provides a practical general-purpose option.
Applications can include:
Residential construction
Commercial buildings
Shop lots
Factories
Warehouses
Building extensions
General construction projects
Myzox CL-36 for Higher-Accuracy Leveling
The Myzox CL-36 provides:
Magnification: 36X
Objective Aperture: 36 mm
Minimum Focusing Distance: 0.4 m
1 km Double-Run Leveling Accuracy: ±1.0 mm
Self-Leveling Range: ±15′
Horizontal Circle: 360°
Weight: Approximately 1.3 kg
For larger building projects or applications requiring the higher specified leveling accuracy, the CL-36 may be preferred.
FFL vs Structural Slab Level
Finished Floor Level should not automatically be assumed to be the same as the structural slab elevation.
Depending on the building design, the final floor may include:
Screed
Tiles
Stone
Raised flooring
Other finishes
Therefore, contractors should verify whether the drawing refers to:
Structural slab level
Screed level
Finished Floor Level
Another specified construction level
The auto level provides elevation measurements, but the required target elevation must come from the approved project information.
Checking Floor Levels Before Concrete Pouring
Elevation checks can be performed before concrete placement to confirm that formwork, reference marks or other construction controls correspond with the required level.
This can help identify potential elevation issues before concrete is poured.
During construction, the auto level may also be used to transfer reference marks to convenient locations around the work area.
Checking Floor Levels After Concrete Work
After concrete work, selected points can be checked against the required reference elevation.
This may assist with identifying differences before subsequent floor-finishing work begins.
The measurement method and acceptable tolerance should follow the project's engineering and quality requirements.
FFL and Drainage Coordination
Floor level and drainage elevation are closely related in many buildings.
For example, external ground or drainage levels may need to be lower than particular finished floor elevations according to the project design.
Reliable benchmark transfer helps different construction teams work from a consistent elevation reference.
Common FFL Leveling Mistakes
Using an Unverified Benchmark
If the starting benchmark is wrong, subsequent transferred levels may also be wrong.
Confusing FFL with Slab Level
Always check exactly which elevation is shown on the project drawing.
Staff Not Vertical
A tilted staff can affect the reading.
Tripod Movement
Ensure the instrument remains stable throughout observations.
Incorrect Calculation
Check arithmetic and recorded readings before marking critical elevations.
Not Closing or Rechecking Levels
Important construction levels should be verified according to the project's surveying procedure.
CL-28 or CL-36 for FFL Checking?
For general building construction, consider the CL-28 when:
Normal working distances are involved
28X magnification is sufficient
±2.0 mm leveling specification meets project requirements
Consider the CL-36 when:
Higher 36X magnification is preferred
Greater specified leveling accuracy is required
Larger construction sites are involved
More demanding engineering leveling work is expected
Frequently Asked Questions
Can an auto level be used to check Finished Floor Level?
Yes. An auto level can transfer an established benchmark and determine elevations at required floor locations.
What does FFL mean in construction?
FFL commonly means Finished Floor Level, referring to the specified elevation of the finished floor.
Is FFL the same as concrete slab level?
Not necessarily. Floor finishes may create a difference between the structural slab elevation and final finished floor elevation.
Can the Myzox CL-28 be used for building construction?
Yes. It is suitable for general construction leveling and elevation checking.
Which Myzox model has higher accuracy?
The CL-36 has a specified ±1.0 mm accuracy for 1 km double-run leveling, compared with ±2.0 mm for the CL-28.
Should important FFL measurements be rechecked?
Yes. Critical construction elevations should be verified according to the project's surveying and quality-control procedures.
Myzox Auto Level for Building Contractors Malaysia
MTM Precision supplies Myzox CL-28, CL-36 and professional surveying accessories in Malaysia.
As an authorized distributor of Myzox in Malaysia, we support building contractors, civil engineers, surveyors and construction companies requiring professional equipment for FFL checking, benchmark transfer and site leveling.
Contact MTM Precision
MTM Precision Sdn. Bhd.
Showroom & Service Centre
No. 29-1 & 29-2, Jalan Bandar 18,
Pusat Bandar Puchong,
47160 Puchong, Selangor, Malaysia.
Website: www.mtmpre.com.my
Email: mtmpre@yahoo.com
WhatsApp: +6016-6607346
Contact MTM Precision for enquiries about the Myzox CL-28, CL-36 Auto Level and professional surveying equipment for building construction in Malaysia.
16 Aug 2026
