Description
Product Overview
The Mitutoyo 543-404B is a Japanese-made digital dial indicator from Mitutoyo’s well-regarded ABSOLUTE series. With its ABSOLUTE encoder system eliminating the need to re-zero after power-off, and a clean 0.01 mm resolution over a 12.7 mm range, this gauge is built for the kind of repetitive, high-confidence measurement work where analogue indicators introduce too much room for parallax error or misreading. If you’re setting up a four-jaw chuck, checking runout on a spindle, or tramming a mill head, this indicator gives you a clear, unambiguous readout every time you switch it on — right where you left off.
- ABSOLUTE Encoder — no re-zeroing on power-up: Unlike conventional incremental encoders, the ABSOLUTE system retains its last position reference even after the gauge has been switched off. On the bench, this means you can power down between setups, come back, and trust the reading — critical when you’re mid-run on a production check or working through a long tramming session.
- 0.01 mm resolution over 12.7 mm range: At one-hundredth of a millimetre, this gauge resolves to roughly half a thou — precise enough for the vast majority of toolroom and production inspection work. The 12.7 mm travel gives you enough range to handle typical runout, flatness, and parallelism checks without constantly resetting the probe.
- Metric-only display (mm): This unit reads in millimetres only — no inch/mm toggle. For Australian workshops running metric tooling and drawings, that’s a non-issue; if you’re doing any inch-based work, factor that in before purchasing.
- DATA output button: The dedicated DATA/ON-OFF button supports external data output — useful if you’re feeding measurements into a SPC system or data logger. Not every shop will use this, but it’s a genuine feature for anyone doing process control or formal inspection work.
- Ideal for: Tramming mill heads and vices, four-jaw chuck centring, lathe spindle and chuck runout checks, surface grinder table flatness verification, and repetitive go/no-go inspection on production runs.
Condition
Used (Good Condition / Workshop Patina)
This indicator has seen bench use — the body shows the kind of handling marks and light surface wear you’d expect from a tool that’s been doing real work in a production or toolroom environment. The LCD display is clear and fully legible, the probe stem and contact point show no visible damage or side-loading wear, and the three control buttons — MODE, SET, and DATA/ON-OFF — are all present and functional. The digital readout zeros and responds correctly to probe movement, which is the primary functional test for any indicator of this type. There is no case included with this unit, and no spare contact points or accessories.
As with any used precision indicator, we recommend verifying zero stability and repeatability against a known ground reference surface or gauge block stack before putting it into service. Run the probe through its full 12.7 mm travel a few times and confirm the return-to-zero is consistent — this will tell you everything you need to know about the condition of the internal mechanism. For general tramming, runout, and setup work, a gauge in good functional condition like this one will perform exactly as intended.
Included:
- 1 x Mitutoyo 543-404B Digital Dial Indicator (12.7 mm range, 0.01 mm resolution, metric)
Not included:
- Carry case / storage case
- Spare contact points / anvil tips
- Data cable or SPC accessories
- Calibration certificate
Brand Information
Mitutoyo is Japan’s pre-eminent precision measurement manufacturer and, by most accounts, the global benchmark for metrology tooling. Founded in 1934 and headquartered in Kawasaki, Japan, Mitutoyo produces the full spectrum of precision instruments — from vernier callipers to CMMs — and their gauges are the standard against which other brands are routinely compared. In the Australian toolroom market, Mitutoyo sits at the top tier alongside Mahr and Tesa, well above generic import brands, and their instruments are trusted in aerospace, defence, and high-tolerance production environments where measurement uncertainty is not negotiable.
Specifications
| Feature | Specification |
|---|---|
| Brand | Mitutoyo |
| Model | 543-404B |
| Series | ABSOLUTE Digimatic Indicator (Series 543) |
| Type | Digital Dial Indicator |
| Measuring Range | 12.7 mm |
| Resolution | 0.01 mm |
| Units | Metric only (mm) |
| Accuracy | ±0.02 mm (refer to Mitutoyo datasheet for full accuracy curve) |
| Repeatability | 0.01 mm |
| Encoder Type | ABSOLUTE (position retained after power-off) |
| Display | LCD digital readout |
| Data Output | Yes — Mitutoyo SPC-compatible data output port |
| Stem / Shank Diameter | 8 mm (standard Mitutoyo Series 543 stem) |
| Contact Point Thread | M2.5 (standard) |
| Country of Origin | Japan |
| Condition | Used — Good Condition / Workshop Patina |
| Included | Indicator only |
| Not Included | Case, spare contact points, data cable, calibration certificate |
Keywords
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