DITRON 118 vs 119 Long Jaw Vernier Calipers | Deep Internal Measurement Malaysia
Choosing a Vernier Caliper for Deeper Internal Features
The DITRON 118 and 119 Series Vernier Calipers provide extended measuring jaws for internal dimensions that standard caliper jaws may not reach.
The 118 Series uses extended upper inside jaws. The 119 Series uses overlapping long internal measuring jaws for accessing suitable narrow, deeper openings.
Both series have a listed resolution of 0.02mm. Their measuring ranges, jaw geometry and accuracy differ, so selection should begin with the component drawing and access requirements.
118 SERIES: EXTENDED UPPER INSIDE JAWS
The DITRON 118 Series is designed to help measure internal diameters deeper inside accessible holes.
Its extended upper jaws provide additional reach beyond the shorter inside jaws of a conventional caliper. The instrument also retains the illustrated lower outside measuring jaws.
Check the complete upper jaw profile against the bore entrance and target feature. Jaw length alone does not guarantee access to a particular measurement depth.
118 SERIES MODEL SPECIFICATIONS
All dimensions and accuracy values below are in millimetres. L, a, b and d refer to the manufacturer’s dimensional drawing.
Model: 118-150
Measuring range: 0-150mm
Resolution: 0.02mm
Accuracy: ±0.04mm
L: 236mm
a: 40mm
b: 45mm
d: 16mm
Model: 118-200
Measuring range: 0-200mm
Resolution: 0.02mm
Accuracy: ±0.04mm
L: 286mm
a: 50mm
b: 50mm
d: 16mm
Model: 118-300
Measuring range: 0-300mm
Resolution: 0.02mm
Accuracy: ±0.05mm
L: 400mm
a: 60mm
b: 55mm
d: 16mm
For the 118 Series, b identifies the extended upper jaw dimension in the drawing.
119 SERIES: OVERLAPPING LONG INTERNAL JAWS
The DITRON 119 Series uses overlapping long jaws to help access suitable narrow internal openings.
The catalogue describes these jaws as intended for internal diameter measurement, with extended reach into deeper holes.
The minimum measuring dimension varies by model. Confirm both the listed range and the physical clearance needed to insert and position the jaws.
119 SERIES MODEL SPECIFICATIONS
Model: 119-15-150/60
Measuring range: 15-150mm
Resolution: 0.02mm
Accuracy: ±0.06mm
L: 250mm
a: 60mm
b: 12mm
d: 16mm
Model: 119-18-200/75
Measuring range: 18-200mm
Resolution: 0.02mm
Accuracy: ±0.06mm
L: 305mm
a: 75mm
b: 14mm
d: 16mm
Model: 119-20-300/90
Measuring range: 20-300mm
Resolution: 0.02mm
Accuracy: ±0.06mm
L: 410mm
a: 90mm
b: 15mm
d: 16mm
For the 119 Series, a identifies the long jaw reach shown in the drawing.
These specifications reproduce the supplied DITRON catalogue tables.
118 VS 119: THE MAIN DIFFERENCES
Jaw Arrangement
The 118 Series has extended upper inside jaws alongside lower outside jaws. The 119 Series has a dedicated overlapping long internal jaw arrangement.
Listed Internal Access Purpose
The 118 Series provides extended upper contacts for deeper internal measurements. The 119 Series is intended for suitable narrow internal openings requiring longer jaw access.
Measuring Range
The 118 tables list ranges starting at zero. This does not mean the upper jaws can measure every small bore.
The 119 models have explicit minimum measuring limits of 15mm, 18mm and 20mm.
Accuracy
The 118 models are listed at ±0.04mm or ±0.05mm. All three 119 models are listed at ±0.06mm.
HOW TO CHECK APPLICATION SUITABILITY
Identify the Target Dimension
Mark the exact internal diameter and measurement position on the component drawing. Distinguish the bore entrance from the deeper feature that needs checking.
Check the Insertion Path
Provide the entrance diameter, shoulder positions, recesses and available clearance. The jaws must pass through the opening and reach the target without interference.
Check Effective Reach
The listed jaw dimension is a physical drawing dimension. Usable measuring depth depends on seating, jaw shape and surrounding geometry.
Check Contact Alignment
Both measuring contacts must reach the intended surfaces at the same measurement section. Contacting a chamfer, radius or shoulder can change the result.
Check the Tolerance
A 0.02mm resolution describes the scale reading increment. It does not establish ±0.02mm accuracy.
Assess the model’s listed accuracy together with alignment, contact force and repeatability.
TYPICAL APPLICATIONS
Recessed Bore Checks
Measure suitable internal diameters beyond the reach of conventional short inside jaws.
Sleeve and Housing Inspection
Check accessible internal features in machined sleeves and housings where the jaw profile fits.
Machining Setup Checks
Inspect deeper internal dimensions during component preparation or machining, subject to the required tolerance.
Maintenance and Replacement Parts
Compare accessible internal dimensions with drawings or replacement components.
These applications are relevant to engineering workshops in Selangor, Penang, Johor and other industrial areas in Malaysia.
BASIC MEASUREMENT WORKFLOW
1. Clean the component and contacts.
Remove chips and residue from the bore and measuring surfaces.
2. Inspect the caliper.
Check jaw condition, sliding movement and scale readability.
3. Verify the reference.
Follow the manufacturer’s procedure and use a suitable internal reference. Do not assume a closed-jaw check verifies every internal measuring arrangement.
4. Insert the jaws carefully.
Avoid striking the contacts against the bore entrance or shoulders.
5. Align at the required section.
Use gentle contact and ensure both jaws contact the intended diameter.
6. Repeat the measurement.
Withdraw and reposition the caliper to assess consistency. Check additional depths or orientations where the inspection plan requires them.
CARE AND ROUTINE CHECKING
Protect the extended jaws from impact and bending. Avoid using them to lever, spread or reposition a component.
If readings vary, check access, seating, alignment and contamination first. Persistent disagreement with a suitable reference warrants further inspection or calibration.
For tighter bore tolerances or detailed assessment of bore form, consider whether a dedicated bore measuring method is required.
FREQUENTLY ASKED QUESTIONS
What is the difference between the 118 and 119 Series?
The 118 Series uses extended upper inside jaws. The 119 Series uses overlapping long internal measuring jaws.
What is the resolution?
Both series have a listed resolution of 0.02mm.
What is the longest listed jaw reach?
The 119-20-300/90 has a listed a dimension of 90mm. Actual usable depth depends on the component geometry.
Can the 119 Series measure from zero?
No. The listed minimum dimensions are 15mm, 18mm or 20mm, depending on the model.
Do these calipers require batteries?
No. They use mechanical vernier scales.
Does a 0-150mm range mean every bore below 150mm is accessible?
No. Jaw profile, entrance clearance and contact geometry also limit access.
What information helps with selection?
Provide the internal diameter, measurement depth, entrance size, shoulder details and required tolerance, preferably on a component drawing.
SEO META DESCRIPTION
Compare DITRON 118 and 119 long jaw vernier calipers in Malaysia. Explore extended internal jaws, measuring ranges, 0.02mm resolution and accuracy.
CONTACT MTM PRECISION
Contact MTM Precision with your component drawing, internal diameter and required measuring depth for assistance selecting a DITRON 118 or 119 Long Jaw Vernier 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
