DITRON 805A Needle Digital Depth Calipers | Small Hole and Step Measurement Malaysia
Choosing a Digital Depth Caliper for Small Openings
The DITRON 805A Needle Digital Depth Caliper measures the depth of suitable small holes and step features. Its narrow needle contact provides access where a wider measuring blade may not fit.
The catalogue lists three models covering 0-150mm, 0-200mm and 0-300mm. All provide 0.01mm / 0.0005in resolution, zero-setting at any position and millimetre/inch conversion.
For machining workshops, mould makers and inspection teams in Malaysia, selection should consider the required depth, hole entrance, bottom geometry and available reference surface.
KEY FEATURES
Needle Measuring Contact
The drawing identifies a 1.5mm diameter needle contact. This narrow contact is intended for accessing suitable small openings.
The needle diameter does not establish the minimum usable hole size on its own. Clearance, alignment and the geometry behind the tip must also be checked.
Digital Display
The numerical display provides a direct depth reading relative to the instrument’s reference setting.
Zero-Setting at Any Position
The zero function supports measurements from a selected reference and comparative checks against a known depth.
Millimetre/Inch Conversion
Unit conversion supports drawings and inspection records using either measurement system.
Reference Base
The base rests on the selected datum surface while the needle contacts the feature below it. Clean, stable seating is essential for consistent results.
MODEL SPECIFICATIONS
Model: 805A-150
Measuring range: 0-150mm
Resolution: 0.01mm / 0.0005in
Accuracy: ±0.03mm
Drawing dimension L: 230mm
Model: 805A-200
Measuring range: 0-200mm
Resolution: 0.01mm / 0.0005in
Accuracy: ±0.03mm
Drawing dimension L: 280mm
Model: 805A-300
Measuring range: 0-300mm
Resolution: 0.01mm / 0.0005in
Accuracy: ±0.04mm
Drawing dimension L: 380mm
These specifications reproduce the supplied DITRON catalogue table. L refers to the dimension shown in the manufacturer’s drawing.
150MM, 200MM OR 300MM?
Choose the Range by Required Depth
Select a model that covers the deepest feature to be measured while remaining practical to position.
The 805A-150 and 805A-200 have the same listed accuracy of ±0.03mm. The 805A-300 extends the measuring range to 300mm with a listed accuracy of ±0.04mm.
Check Needle Reach Separately
The instrument’s full measuring range should not be interpreted as the length over which the complete probe remains 1.5mm in diameter.
Confirm the usable slender needle length and the clearance required behind it. This is particularly important for deep, narrow bores.
Check Base Support
The workpiece must provide enough suitable reference surface for stable seating. A base that rocks or rests on a burr can affect the reading.
RESOLUTION IS DIFFERENT FROM ACCURACY
The 0.01mm resolution describes the displayed increment. It does not mean the gauge has ±0.01mm accuracy.
For example, the 805A-150 displays in 0.01mm increments but has a stated accuracy of ±0.03mm.
The complete result also depends on reference setting, base seating, alignment, contact position and measuring force.
TYPICAL APPLICATIONS
Small Hole Depth Checks
Use the needle contact for accessible holes where the entrance and internal geometry provide sufficient clearance.
Mould and Tooling Recesses
Check suitable small recesses where a wider blade cannot reach the intended contact location.
Step Height Measurement
Measure accessible differences in level using the base and needle arrangement.
Machined Component Inspection
Check depth features during setup, production inspection or maintenance, subject to the required tolerance.
These applications are relevant to engineering workshops in Selangor, Penang, Johor and other industrial areas in Malaysia.
UNDERSTAND THE HOLE BOTTOM
A drilled hole may have a conical bottom. A narrow needle can contact a different position from a flat blade, so the two instruments may produce different readings.
Identify whether the drawing requires depth to the deepest point, a shoulder or the end of the full-diameter cylindrical section.
For threaded holes, confirm that the needle reaches the intended surface rather than contacting a thread flank or trapped debris.
BASIC MEASUREMENT WORKFLOW
1. Clean the instrument and component.
Remove chips and residue from the base, needle and hole.
2. Inspect the needle.
Check for visible bending, damage or contamination.
3. Verify the reference.
Follow the manufacturer’s procedure and check zero against a suitable reference surface.
4. Seat the base.
Place the base on the intended datum without rocking.
5. Advance the needle gently.
Contact the required surface without forcing the needle against the hole wall or bottom.
6. Check alignment and read.
Keep the measuring direction aligned with the required depth.
7. Repeat the measurement.
Withdraw and reposition the instrument to assess consistency before recording the result.
CARE AND ROUTINE CHECKING
Protect the slender needle from side loading, impact and bending. Do not use it to clear debris from holes.
If readings vary, check cleanliness, base seating, contact location and alignment first.
Persistent disagreement with a suitable reference warrants further inspection or calibration.
The supplied page does not specify battery type, automatic power functions, housing material, an IP rating or data output. Confirm these details where required rather than assuming specifications from another depth caliper series.
FREQUENTLY ASKED QUESTIONS
What does the DITRON 805A measure?
It is designed for suitable small hole depth and step measurements.
What ranges are available?
The catalogue lists 0-150mm, 0-200mm and 0-300mm.
What is the resolution?
All three models have 0.01mm / 0.0005in resolution.
What needle diameter is shown?
The drawing identifies a 1.5mm diameter contact. Confirm the usable needle length and complete probe profile for restricted openings.
Can it measure a 150mm-deep hole only slightly larger than 1.5mm?
This cannot be established from the measuring range and tip diameter alone. The full probe geometry and usable slender length must be confirmed.
Does it support zero-setting and inches?
Yes. Zero-setting at any position and millimetre/inch conversion are listed.
What information helps with selection?
Provide the required depth, hole diameter, bottom shape, reference surface, tolerance and a component drawing.
SEO META DESCRIPTION
Explore DITRON 805A needle digital depth calipers in Malaysia. Compare 150-300mm ranges, 0.01mm resolution and small hole measurement requirements.
CONTACT MTM PRECISION
Contact MTM Precision with your hole dimensions, required depth and inspection tolerance for assistance selecting a DITRON 805A Needle Digital Depth 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
