DITRON Centre and Edge Distance Digital Caliper | 150mm to 600mm Selection Guide Malaysia
Choosing a Digital Caliper for Hole Centre and Edge Distance Measurement
The DITRON Centre and Edge Distance Digital Caliper is designed for checking hole centre distances and hole edge distances using conical measuring heads.
The supplied catalogue lists five models covering 5–150mm, 5–200mm, 5–300mm, 5–500mm and 10–600mm. All five models have a stated resolution of 0.01mm.
For machining workshops, fixture manufacturers and inspection teams in Malaysia, selection should consider the required spacing, hole geometry, probe access and measurement tolerance.
WHAT DOES THIS CALIPER MEASURE?
Hole Centre Distance
Centre distance is the separation between the centres of two holes. The conical heads provide locating contacts for suitable circular holes.
This arrangement can help reduce the need to calculate centre spacing from separate hole diameter and gap measurements, provided the contacts seat correctly and the instrument is referenced according to its instructions.
Hole Edge Distance
The catalogue also identifies hole edge distance measurement as an intended application.
Before choosing the instrument, identify the exact dimension on the drawing. Centre-to-centre, centre-to-edge and edge-to-edge distances are different measurements and may require different contact arrangements or reference settings.
A component drawing helps confirm whether the illustrated configuration suits the required dimension.
KEY FEATURES
Conical Measuring Heads
The cone-shaped contacts are intended to locate in suitable circular holes. Correct seating depends on the hole opening, probe geometry and condition of the contact surfaces.
Burrs, uneven chamfers or damaged hole edges can affect seating and measurement consistency.
0.01mm Resolution
All listed models display measurements in 0.01mm increments. Resolution is separate from accuracy, which varies across the range.
Zero-Setting at Any Position
The catalogue specifies zero-setting at any position for relative and absolute measurement conversion.
This supports measurements from a selected reference. It does not, by itself, establish that the instrument uses an absolute position encoder.
Metric and Imperial Conversion
The catalogue lists millimetre/inch conversion at any position, supporting drawings and inspection records using either unit system.
MODEL SPECIFICATIONS
All dimensions and accuracy values below are in millimetres. The labels a1, a2, b, d and Φ refer to the manufacturer’s dimensional drawing.
Model: 624-5-150
Measuring range: 5–150mm
Resolution: 0.01mm
Accuracy: ±0.04mm
a1: 55mm
a2: 45mm
b: 45mm
d: 16mm
Φ: 10mm
Model: 624-5-200
Measuring range: 5–200mm
Resolution: 0.01mm
Accuracy: ±0.04mm
a1: 55mm
a2: 45mm
b: 45mm
d: 16mm
Φ: 10mm
Model: 624-5-300
Measuring range: 5–300mm
Resolution: 0.01mm
Accuracy: ±0.05mm
a1: 55mm
a2: 45mm
b: 45mm
d: 16mm
Φ: 10mm
Model: 624-5-500
Measuring range: 5–500mm
Resolution: 0.01mm
Accuracy: ±0.06mm
a1: 75mm
a2: 65mm
b: 50mm
d: 24mm
Φ: 10mm
Model: 624-10-600
Measuring range: 10–600mm
Resolution: 0.01mm
Accuracy: ±0.06mm
a1: 75mm
a2: 65mm
b: 50mm
d: 24mm
Φ: 20mm
These values reproduce the supplied DITRON catalogue table. Use the complete model number when requesting a quotation because other DITRON products also use a 624 model prefix.
HOW TO SELECT THE CORRECT MODEL
Check the Minimum and Maximum Spacing
The first four models have a listed minimum measuring range of 5mm. The 624-10-600 starts at 10mm.
These range limits describe the listed measurement span. They should not be interpreted as the minimum compatible hole diameter.
Check Probe and Hole Compatibility
The drawing lists Φ10mm for the 150mm to 500mm models and Φ20mm for the 600mm model.
These are probe dimensions shown in the drawing. They do not provide a complete statement of compatible hole sizes, cone angles or seating depths.
Confirm suitability using the actual hole diameter, chamfer, depth and access conditions.
Check Contact Reach
The a1, a2 and b dimensions change on the larger models. Compare the complete probe arrangement with the workpiece to ensure both contacts can reach their intended locations.
Check Accuracy Against the Tolerance
The 150mm and 200mm models are listed at ±0.04mm, the 300mm model at ±0.05mm, and the 500mm and 600mm models at ±0.06mm.
A 0.01mm display increment does not mean the measurement is accurate to ±0.01mm. Assess the stated accuracy together with seating consistency, alignment and the inspection method.
TYPICAL APPLICATIONS
Machined Plate Hole Spacing
The caliper can be considered for checking distances between suitable circular holes in machined plates.
Fixture and Jig Inspection
Hole positions on fixtures often need checking against drawing dimensions. Conical contacts provide a locating arrangement where the hole geometry permits consistent seating.
Fabricated Component Checks
The instrument may suit accessible hole spacing checks on brackets and fabricated assemblies, subject to the required tolerance and surface condition.
Maintenance and Replacement Part Matching
Centre spacing can help compare mounting patterns when assessing replacement components. Confirm other relevant dimensions separately.
These applications are relevant to engineering teams in Selangor, Penang, Johor and other industrial areas in Malaysia.
PRACTICAL MEASUREMENT WORKFLOW
1. Identify the required dimension.
Confirm whether the drawing specifies centre distance or an edge-related dimension. Select the appropriate contact arrangement and reference procedure.
2. Prepare the holes.
Clean the contact areas and check for burrs, debris, damage or uneven chamfers.
3. Check the instrument reference.
Follow the manufacturer’s procedure and verify the setup against a suitable known reference.
4. Seat the contacts.
Engage both measuring heads consistently. Avoid forcing the cones into the holes or allowing one head to seat differently from the other.
5. Align the caliper.
Keep the instrument aligned with the intended measurement direction. Workpiece tilt and uneven support can affect contact.
6. Repeat the measurement.
Remove and reseat the instrument to assess consistency before recording the result.
If repeated readings vary substantially, investigate seating and alignment before using the result for acceptance decisions.
IMPORTANT APPLICATION LIMITATIONS
Unequal chamfers or different hole entrance conditions can cause the two cones to seat at different depths. Check that the contact arrangement remains suitable for the part.
This caliper measures a selected distance between features. It does not, by itself, establish the complete positional accuracy of a hole pattern relative to all drawing datums.
For complex geometric tolerances or tighter inspection requirements, assess whether another measurement method is needed.
The supplied page illustrates two probe configurations. Confirm which configuration is supplied with the selected model and whether any alternative measuring heads are included.
FREQUENTLY ASKED QUESTIONS
What is this caliper designed for?
The catalogue identifies hole centre distance and hole edge distance measurement using conical measuring heads.
What ranges are available?
The listed ranges are 5–150mm, 5–200mm, 5–300mm, 5–500mm and 10–600mm.
What is the resolution?
All five listed models have a resolution of 0.01mm.
Does the minimum range indicate the smallest hole diameter?
No. Measuring span and compatible hole diameter are separate requirements. Probe seating must be checked against the hole geometry.
Can it measure holes with different diameters?
Suitability depends on the probe configuration and whether both contacts locate correctly. Provide the hole diameters and drawing for assessment.
Does it support millimetres and inches?
Yes. The catalogue lists metric and imperial conversion.
Are both illustrated configurations included?
The supplied page does not confirm package contents. Confirm the supplied measuring heads and configuration before ordering.
What should I send when requesting model selection?
Provide the required spacing, hole diameters, hole depth, chamfer details, drawing tolerance and a component photograph or drawing.
SEO META DESCRIPTION
Explore DITRON centre and edge distance digital calipers in Malaysia. Compare 150–600mm models, conical measuring heads, 0.01mm resolution and accuracy.
CONTACT MTM PRECISION
Contact MTM Precision with your component drawing, hole dimensions and required measurement tolerance for assistance selecting a DITRON Centre and Edge Distance Digital Caliper.
MTM Precision Sdn Bhd
Showroom & Service Centre: No. 29-1 & 29-2, Jalan Bandar 18, Pusat Bandar Puchong, 47160 Puchong, Selangor, Malaysia
Tel: 03-8080 7172
WhatsApp: +6016-660 7346
Email: mtmpre@yahoo.com
Website: www.mtmpre.com.my
25 Oct 2026
