DITRON 620 Thin Jaw & 621 Pointed Jaw Digital Calipers | Narrow Groove Measurement Malaysia
DITRON 620 and 621 Special Jaw Digital Calipers
The DITRON 620 and 621 series are designed for measuring features that require finer jaw access than a conventional caliper provides.
The 620 series features thin jaws for narrow groove measurement. The 621 series features narrow pointed jaws for small grooves and restricted measuring locations.
Both series are available in 150mm, 200mm and 300mm measuring ranges, with digital readout, zero-setting at any position and millimetre/inch conversion.
PRODUCT HIGHLIGHTS
• 620 series: thin measuring jaws.
• 621 series: narrow pointed measuring jaws.
• Measuring ranges: 0–150mm, 0–200mm and 0–300mm.
• Digital readout.
• Zero-setting at any position.
• Relative measurement using a selected reference.
• Millimetre/inch conversion at any position.
• Specialised jaw profiles for suitable narrow features.
620 SERIES — DIGITAL CALIPERS WITH THIN JAWS
The DITRON 620 series uses thin jaw sections to access suitable narrow grooves.
Before selecting, compare the groove opening, depth and surrounding geometry with the manufacturer’s jaw drawing. Thin jaws must reach the intended measuring surfaces without contacting adjacent edges or shoulders.
Available models:
DITRON 620-150
Measuring range: 0–150mm
Catalogue-stated accuracy: ±0.03mm
Overall length L: 236mm
Dimension a: 40mm
Dimension b: 21mm
Dimension c: 16.5mm
Dimension d: 16mm
Dimension e: 20mm
Dimension f: 3.5mm
Dimension g: 0.75mm
DITRON 620-200
Measuring range: 0–200mm
Catalogue-stated accuracy: ±0.03mm
Overall length L: 286mm
Dimension a: 50mm
Dimension b: 24mm
Dimension c: 19.5mm
Dimension d: 16mm
Dimension e: 20mm
Dimension f: 3.5mm
Dimension g: 0.75mm
DITRON 620-300
Measuring range: 0–300mm
Catalogue-stated accuracy: ±0.04mm
Overall length L: 400mm
Dimension a: 60mm
Dimension b: 26mm
Dimension c: 21.5mm
Dimension d: 16mm
Dimension e: 20mm
Dimension f: 4mm
Dimension g: 1mm
Dimensions follow the manufacturer’s drawing. The listed g dimension alone does not establish the minimum measurable groove width; operating clearance and the complete jaw profile must also be checked.
621 SERIES — DIGITAL CALIPERS WITH POINTED JAWS
The DITRON 621 series features narrow pointed jaws for measuring small groove features where the contact geometry permits.
The pointed profile offers a different approach to restricted access than the thin-section jaws of the 620 series. Choose according to the actual contact location required on the component.
Available models:
DITRON 621-150
Measuring range: 0–150mm
Catalogue-stated accuracy: ±0.03mm
Overall length L: 236mm
Dimension a: 40mm
Dimension b: 21mm
Dimension c: 16.5mm
Dimension d: 16mm
DITRON 621-200
Measuring range: 0–200mm
Catalogue-stated accuracy: ±0.03mm
Overall length L: 286mm
Dimension a: 50mm
Dimension b: 24mm
Dimension c: 19.5mm
Dimension d: 16mm
DITRON 621-300
Measuring range: 0–300mm
Catalogue-stated accuracy: ±0.04mm
Overall length L: 400mm
Dimension a: 60mm
Dimension b: 25mm
Dimension c: 21.5mm
Dimension d: 16mm
The supplied page does not specify the 621 jaw tip radius or minimum measurable groove opening. Confirm these details when assessing small features.
620 VS 621 — WHICH SHOULD YOU CHOOSE?
Choose the 620 series when the feature requires a thin jaw section that matches the groove geometry.
Choose the 621 series when narrow pointed contacts better suit the intended measuring surfaces.
Both series have the same catalogue-stated accuracy at corresponding measuring ranges. Neither jaw design is universally better for every groove.
A component drawing or sample is the best starting point for checking suitability.
CHOOSING THE MEASURING RANGE
150mm Models
For smaller components and dimensions within a 150mm measuring capacity.
200mm Models
For components requiring additional capacity beyond 150mm.
300mm Models
For larger components requiring up to 300mm capacity.
Maximum opening and feature access are separate requirements. A caliper may have sufficient measuring range while its jaws cannot reach the required surfaces.
ZERO-SETTING AND UNIT CONVERSION
Both series list zero-setting at any position. This allows a reference to be established for comparative measurement, following the operating instructions.
Both also support millimetre/inch conversion at any position.
The catalogue’s reference to relative and absolute measurement conversion does not explicitly establish a coded absolute encoder or reference retention after power loss.
APPLICATIONS IN MALAYSIA
The DITRON 620 and 621 series can be considered for:
• Narrow groove checks on machined components.
• Small-feature inspection.
• Recessed external measuring locations.
• Maintenance and replacement-part comparison.
• Incoming component inspection.
• Production checks where standard jaws cannot make suitable contact.
For workshops and inspection departments in Selangor, Kuala Lumpur, Johor and Penang, confirm the required dimension and tolerance before choosing a jaw profile.
Groove width, groove depth, root diameter and profile are different measurements. One caliper configuration may not cover all of them.
ACCURACY AND DISPLAY RESOLUTION
Catalogue-stated accuracy for both series:
150mm models: ±0.03mm
200mm models: ±0.03mm
300mm models: ±0.04mm
The supplied page does not explicitly state display resolution. Confirm this separately rather than inferring it from the product photograph.
Specialised jaws provide access to particular features. They do not automatically provide better accuracy than a standard caliper.
BASIC MEASURING PROCEDURE
1. Identify the required dimension on the component drawing.
2. Check that the jaw profile can access the intended surfaces.
3. Clean the jaws and workpiece.
4. Check zero according to the operating instructions.
5. Position the jaws without forcing them into the feature.
6. Ensure the contacts clear adjacent shoulders and edges.
7. Apply light, consistent measuring force.
8. Check alignment and read the display.
9. Repeat the measurement to assess consistency.
Avoid excessive force, particularly when using thin or pointed jaw sections.
CARE AND BASIC CHECKS
• Protect the fine jaw sections from impact and bending.
• Do not use the jaws as scribers, levers or clamps.
• Remove chips before closing the jaws.
• Avoid measuring hot or moving components.
• Follow the supplied battery and cleaning instructions.
• Store the instrument with the measuring tips 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 620 and 621?
The 620 has thin jaws, while the 621 has narrow pointed jaws. Select according to the feature geometry.
What measuring ranges are available?
Both series list 150mm, 200mm and 300mm models.
What is dimension g on the 620 models?
The catalogue lists 0.75mm for the 620-150 and 620-200, and 1mm for the 620-300. Refer to the drawing for its location.
Does a 0.75mm jaw dimension guarantee measurement of a 0.75mm groove?
No. Clearance and the complete contact geometry must also be assessed.
What is the pointed tip size on the 621?
The supplied page does not specify tip radius or minimum contact width. Request confirmation for small-feature applications.
Are the 620 and 621 equally accurate?
The catalogue lists the same accuracy for corresponding measuring ranges.
Can the display be zeroed at a reference?
Yes. Zero-setting at any position is listed for both series.
Can they switch between millimetres and inches?
Yes. Millimetre/inch conversion at any position is listed.
What is the display resolution?
It is not explicitly specified on the supplied page. Confirm before ordering if required.
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 620 thin jaw and 621 pointed jaw digital calipers in Malaysia. Explore 150mm, 200mm and 300mm models for narrow groove measurement.
ENQUIRE ABOUT DITRON SPECIAL JAW DIGITAL CALIPERS
Contact MTM Precision with your preferred measuring range, quantity and component drawing. Include the groove opening, depth, required contact location and tolerance so jaw suitability can be assessed.
Please specify any resolution or calibration documentation requirements. Availability, final specifications 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
