DITRON 113 vs 116 Groove Vernier Calipers | Outside and Inside Groove Measurement Malaysia
Choosing the Correct Caliper for External and Internal Grooves
The DITRON 113 and 116 Series Groove Vernier Calipers use flat measuring points to reach groove surfaces that conventional caliper jaws may not contact properly.
The 113 Series is designed for outside groove measurement, including the diameter of an external groove. The 116 Series is designed for inside groove measurement.
Both series have a listed resolution of 0.02mm. Their measuring ranges, accuracy and contact dimensions differ, so selection should begin with the groove location and workpiece drawing.
For machining and maintenance teams in Malaysia, the correct contact geometry is just as important as the measuring range.
113 SERIES: OUTSIDE GROOVE VERNIER CALIPER
The DITRON 113 Series has inward-facing flat measuring points for contacting suitable external groove surfaces.
The catalogue identifies outside groove diameter measurement as its application. Typical parts may include grooved shafts and other components with accessible external recesses.
Before selecting a model, check that the measuring points can enter the groove and reach the intended surface without contacting the surrounding shoulders.
113 SERIES MODEL SPECIFICATIONS
All dimensions and accuracy values below are in millimetres. L and a–e refer to the manufacturer’s dimensional drawing.
Model: 113-150
Measuring range: 0–150mm
Resolution: 0.02mm
Accuracy: ±0.03mm
L: 250mm
a: 40mm
b: 15mm
c: 2mm
d: 16mm
e: 5mm
Model: 113-200
Measuring range: 0–200mm
Resolution: 0.02mm
Accuracy: ±0.03mm
L: 310mm
a: 50mm
b: 19mm
c: 2mm
d: 16mm
e: 7mm
Model: 113-300
Measuring range: 0–300mm
Resolution: 0.02mm
Accuracy: ±0.03mm
L: 410mm
a: 60mm
b: 21mm
c: 2mm
d: 16mm
e: 8mm
116 SERIES: INSIDE GROOVE VERNIER CALIPER
The DITRON 116 Series has outward-facing flat measuring points for accessing suitable internal grooves.
Its measuring ranges begin above zero: 22mm, 25mm or 30mm, depending on the model. These limits must be considered alongside the physical opening needed to insert and position the jaws.
The listed measuring range does not establish compatibility with every bore or groove of that size. Access also depends on the bore entrance, groove depth, jaw profile and surrounding features.
116 SERIES MODEL SPECIFICATIONS
Model: 116-22-150
Measuring range: 22–150mm
Resolution: 0.02mm
Accuracy: ±0.05mm
L: 250mm
a: 30mm
b: 11mm
c: 1mm
d: 16mm
e: 5mm
Model: 116-25-200
Measuring range: 25–200mm
Resolution: 0.02mm
Accuracy: ±0.05mm
L: 310mm
a: 40mm
b: 12.5mm
c: 1mm
d: 16mm
e: 5mm
Model: 116-30-300
Measuring range: 30–300mm
Resolution: 0.02mm
Accuracy: ±0.06mm
L: 410mm
a: 50mm
b: 15mm
c: 1.5mm
d: 16mm
e: 5mm
113 VS 116: THE MAIN DIFFERENCES
Groove Location
Choose the 113 Series for suitable external grooves. Choose the 116 Series for suitable internal grooves.
Contact Direction
The 113 measuring points face inward to contact an external feature. The 116 measuring points face outward to contact an internal feature.
Measuring Range
The 113 models have listed ranges starting at zero. The 116 models have minimum readings of 22mm, 25mm or 30mm.
Accuracy
The 113 models are listed at ±0.03mm. The 116 models are listed at ±0.05mm or ±0.06mm, depending on the model.
Contact Dimensions
The measuring point dimensions differ between the series and between sizes. Compare the drawing dimensions with the actual groove before ordering.
HOW TO SELECT A GROOVE CALIPER
Identify the Exact Dimension
Confirm whether the drawing requires an external groove diameter, internal groove diameter or another groove-related dimension.
Groove width and groove diameter are different measurements. Do not assume that a caliper designed for one can measure the other using the same contact arrangement.
Check Groove Access
Provide the groove width, depth, diameter and distance from the component entrance or shoulder.
The measuring points must reach the intended surface without interference. A nominal contact thickness alone does not establish the minimum usable groove width because insertion clearance and the complete jaw profile also matter.
Check Measuring Range
Choose a model that covers the required dimension while allowing practical positioning and removal.
For the 116 Series, pay particular attention to the lower measuring limit.
Check Accuracy
A 0.02mm resolution describes the scale reading increment. It does not mean the caliper has ±0.02mm accuracy.
Compare the stated accuracy and complete measurement method with the component tolerance.
TYPICAL APPLICATIONS
External Groove Inspection
The 113 Series can be considered for checking accessible groove diameters on shafts and similar machined components.
Internal Groove Inspection
The 116 Series can be considered for checking accessible internal grooves in bores, sleeves and housings.
Machining Setup Checks
Specialised contacts can help operators inspect recessed features during machining, subject to the required tolerance.
Maintenance and Replacement Parts
Groove dimensions can support assessment of worn components and comparison with replacement parts.
These applications are relevant to engineering workshops in Selangor, Penang, Johor and other industrial areas in Malaysia.
PRACTICAL MEASUREMENT WORKFLOW
1. Clean the groove and contacts.
Remove chips, dirt and deposits. Check for burrs that could prevent the flat points from seating correctly.
2. Inspect the caliper.
Check the measuring points, scale and sliding movement for visible damage or looseness.
3. Verify the reference.
Follow the manufacturer’s checking procedure. For the internal groove models, use a suitable reference rather than assuming the jaws can close to zero.
4. Position the measuring points.
Ensure that both contacts reach the intended groove surfaces and are clear of shoulders, chamfers and edge radii.
5. Align and apply gentle contact.
Keep the caliper aligned with the required dimension. Avoid forcing the jaws into the groove.
6. Repeat the measurement.
Remove and reposition the caliper to assess consistency. Where relevant, check additional positions around the component.
FREQUENTLY ASKED QUESTIONS
Which series is for outside grooves?
The DITRON 113 Series is designed for outside groove measurement.
Which series is for inside grooves?
The DITRON 116 Series is designed for inside groove measurement.
What is the resolution?
Both series have a listed resolution of 0.02mm.
Do these calipers need batteries?
No. They use mechanical vernier scales.
Can they measure groove width?
The supplied page identifies outside groove diameter and inside groove measurement. Confirm the intended dimension and contact arrangement before selecting either series for groove width measurement.
Why does the 116 Series start above zero?
Its listed measuring ranges reflect the internal measuring configuration. Check both the minimum range and physical access requirements.
Are the flat points suitable for every groove?
No. Groove width, depth, radii and access must be checked against the complete measuring point geometry.
What information should I provide for selection?
Send a component drawing or clear photograph showing the groove location, diameter, width, depth and required tolerance.
SEO META DESCRIPTION
Compare DITRON 113 outside and 116 inside groove vernier calipers in Malaysia. Explore flat measuring points, ranges, 0.02mm resolution and accuracy.
CONTACT MTM PRECISION
Contact MTM Precision with your groove drawing, dimensions and inspection tolerance for assistance selecting a DITRON 113 or 116 Groove 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
