DITRON 619 & 627 Long Internal Jaw Digital Calipers | Deep Hole Inside Measurement Malaysia
DITRON 619 and 627 Long Internal Jaw Digital Calipers
The DITRON 619 and 627 series feature extended internal measuring jaws for accessing inside dimensions deeper within suitable holes and openings.
The 619 series uses extended upper inside jaws. The 627 series uses overlapping long internal jaws, with specific minimum measuring sizes listed for each model.
For machining workshops, maintenance teams and inspection departments in Malaysia, selection should consider the internal diameter, required measuring depth, entry clearance and tolerance.
PRODUCT HIGHLIGHTS
• Specialised jaw designs for internal measurement.
• 619 series: extended upper inside jaws.
• 627 series: overlapping long internal jaws.
• Digital readout.
• Zero-setting at any position.
• Relative measurement using a selected reference.
• Millimetre/inch conversion at any position.
• Multiple measuring ranges and jaw lengths.
619 SERIES — EXTENDED UPPER INSIDE JAWS
The DITRON 619 series features extended upper measuring jaws for checking internal dimensions at locations that shorter inside jaws may not reach.
The catalogue lists 0.01mm resolution for all three models. Confirm the minimum measurable internal opening separately; the listed 0-based instrument range does not mean that the upper jaws can measure every opening down to zero.
Available models:
DITRON 619-150
Listed measuring range: 0–150mm
Resolution: 0.01mm
Catalogue-stated accuracy: ±0.04mm
Dimension L: 236mm
Lower jaw dimension a: 40mm
Upper jaw dimension b: 45mm
Dimension d: 16mm
DITRON 619-200
Listed measuring range: 0–200mm
Resolution: 0.01mm
Catalogue-stated accuracy: ±0.04mm
Dimension L: 286mm
Lower jaw dimension a: 50mm
Upper jaw dimension b: 50mm
Dimension d: 16mm
DITRON 619-300
Listed measuring range: 0–300mm
Resolution: 0.01mm
Catalogue-stated accuracy: ±0.05mm
Dimension L: 400mm
Lower jaw dimension a: 60mm
Upper jaw dimension b: 55mm
Dimension d: 16mm
All dimensions follow the manufacturer’s drawing and are in millimetres.
627 SERIES — OVERLAPPING LONG INTERNAL JAWS
The DITRON 627 series features overlapping long jaws designed for internal measurement in suitable narrow and deeper openings.
Unlike the 619 table, the 627 table explicitly lists a non-zero minimum measuring size for each model. Check both ends of the measuring range before selection.
Available models:
DITRON 627-15-150/60
Measuring range: 15–150mm
Catalogue-stated accuracy: ±0.06mm
Dimension L: 250mm
Jaw dimension a: 60mm
Dimension b: 12mm
Dimension d: 16mm
DITRON 627-17-200/75
Measuring range: 17–200mm
Catalogue-stated accuracy: ±0.06mm
Dimension L: 305mm
Jaw dimension a: 75mm
Dimension b: 14mm
Dimension d: 16mm
DITRON 627-18-300/90
Measuring range: 18–300mm
Catalogue-stated accuracy: ±0.06mm
Dimension L: 410mm
Jaw dimension a: 90mm
Dimension b: 15mm
Dimension d: 16mm
DITRON 627-22-500/100
Measuring range: 22–500mm
Catalogue-stated accuracy: ±0.08mm
Dimension L: 700mm
Jaw dimension a: 100mm
Dimension b: 20mm
Dimension d: 24mm
The supplied page does not explicitly specify display resolution for the 627 series. Confirm this separately rather than transferring the 619 specification.
619 VS 627 — WHICH SERIES SHOULD YOU CHOOSE?
Choose the 619 series when:
• Extended upper inside jaws suit the component.
• Upper jaw dimensions of 45mm, 50mm or 55mm provide suitable access.
• The listed 0.01mm resolution meets your readout requirement.
Choose the 627 series when:
• The overlapping internal jaw arrangement suits the opening.
• Longer jaw dimensions of 60mm to 100mm are required.
• The internal dimension falls within the selected model’s stated minimum and maximum range.
Jaw length alone does not establish usable insertion depth. The complete jaw profile, entry opening and surrounding component geometry must also be assessed.
MINIMUM INTERNAL MEASURING SIZE
The minimum listed measuring sizes for the 627 series are:
627-15-150/60: 15mm
627-17-200/75: 17mm
627-18-300/90: 18mm
627-22-500/100: 22mm
For example, the 627-22-500/100 should not be selected for a 20mm internal dimension because it is below the stated 22mm minimum.
A hole entrance smaller than the measuring location can also prevent insertion, even when the target internal diameter is within range.
CHECKING DEEP HOLE ACCESS
Before ordering, confirm:
• Internal dimension at the measuring location.
• Entry opening size.
• Distance from the opening to the measuring location.
• Internal shoulders or obstructions.
• Required contact position.
• Component tolerance.
• Available clearance for positioning the instrument.
Provide a cross-sectional drawing where possible. This helps assess whether the jaws can enter and contact the intended surfaces.
APPLICATIONS IN MALAYSIA
The DITRON 619 and 627 series can be considered for:
• Internal dimensions in machined housings.
• Accessible bore measurements below an opening.
• Internal spacing checks.
• Maintenance and replacement-part comparison.
• Incoming inspection of components with recessed internal features.
• Production checks where standard inside jaws lack sufficient reach.
For users in Selangor, Kuala Lumpur, Johor and Penang, confirm suitability against the actual feature rather than selecting by maximum measuring range alone.
For close-tolerance bore inspection or roundness assessment, consider whether a bore gauge, inside micrometer or another measuring system is more appropriate.
ZERO-SETTING AND UNIT CONVERSION
Both series list zero-setting at any position and millimetre/inch conversion.
For internal measurement, follow the manufacturer’s reference-setting procedure. Confirm whether the instrument requires a setting standard, preset value or allowance for its contact geometry.
The catalogue’s wording about relative and absolute measurement conversion does not explicitly establish a coded absolute encoder or reference retention after power loss.
ACCURACY AND MEASUREMENT TECHNIQUE
Catalogue-stated accuracy varies by model:
619 series: ±0.04mm to ±0.05mm
627 series: ±0.06mm to ±0.08mm
The 619 series has a listed resolution of 0.01mm. Resolution and accuracy are different specifications.
Internal readings can be affected by jaw alignment, contact position, excessive force, contamination and temperature. A reading taken away from the correct diametral position may not represent the required bore diameter.
BASIC MEASURING PROCEDURE
1. Clean the measuring contacts and workpiece.
2. Confirm that the jaws can enter without interference.
3. Establish the measuring reference according to the instructions.
4. Insert the jaws carefully to the required location.
5. Align the contacts with the dimension being measured.
6. Apply light, consistent contact force.
7. Check that both contacts seat on the intended surfaces.
8. Read and record the measurement.
9. Repeat to assess consistency.
10. Withdraw the instrument without catching the jaws on internal shoulders.
Do not force the jaws through an opening or use them to clear chips.
CARE AND BASIC CHECKS
• Protect extended jaws from bending and impact.
• Keep contact surfaces and sliding components clean.
• Avoid excessive force.
• Do not measure hot or moving components.
• Follow the supplied battery and cleaning instructions.
• Store with the long jaws protected.
• Check performance against suitable reference standards according to your quality procedure.
The supplied page does not explicitly specify an IP rating, battery type, rechargeable operation, Bluetooth capability or material grade.
FREQUENTLY ASKED QUESTIONS
What is the main difference between the 619 and 627?
The 619 uses extended upper inside jaws. The 627 uses overlapping long internal jaws and lists specific minimum internal measuring sizes.
What resolution is listed for the 619?
The catalogue specifies 0.01mm for all three models.
Does the 627 have the same resolution?
The supplied page does not explicitly specify 627 resolution. Confirm separately.
Can the 619 measure a hole of any size below its maximum range?
No. The listed instrument range does not establish the minimum opening accessible to its upper inside jaws.
What is the largest 627 model?
The 627-22-500/100 has a listed 22–500mm measuring range and a 100mm jaw dimension a.
Does a 100mm jaw length guarantee 100mm insertion depth?
No. Usable access depends on jaw geometry, the hole entrance and surrounding obstructions.
Can these instruments check bore roundness?
Measurements at different positions may show dimensional variation, but a caliper does not by itself provide a complete roundness assessment.
Can both series switch between millimetres and inches?
Yes. Millimetre/inch conversion is listed for both.
Are these rechargeable models?
Rechargeable operation and Type-C charging are not specified on the supplied page.
Is a calibration certificate included?
The supplied page does not confirm that an individual calibration certificate is included. Specify documentation requirements when requesting a quotation.
SEO META DESCRIPTION
Compare DITRON 619 and 627 long internal jaw digital calipers in Malaysia for deep hole inside measurement, with model ranges extending to 500mm.
ENQUIRE ABOUT DITRON LONG INTERNAL JAW DIGITAL CALIPERS
Contact MTM Precision with the internal dimension, entry opening, measuring depth, tolerance and required quantity. Include a cross-sectional drawing or clear photos so jaw access can be assessed.
Please specify any resolution, reference-setting or calibration documentation requirements. Availability, final configuration and supplied accessories are subject to confirmation.
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
24 Oct 2026
