Mitutoyo 543-793B-10 Digimatic Indicator

Technical Overview

Digital indicator featuring a 0.5" range, 0.0001" resolution, ±0.0001" accuracy, flat back, IP42 protection, and ABSOLUTE capacitance encoder.

Key Features

ABSOLUTE electrostatic capacitance linear encoder automatically restores origin point at power-on [1.2.1].
0.5" (12.7 mm) measuring range with switchable inch/metric readings.
High-contrast LCD screen with large 9 mm character height for easy readability.
Flat back plate design (no lug) for flexible fixture mounting.
IP42 dust and water protection rating.
SPC Digimatic data output for statistical process control integration.
Unlimited response speed prevents over-speed measurement errors.
1.5 N or less low measuring force ensures workpiece protection.

Technical Specification Matrix

Parameter	Value
Measuring Range	0 - 0.5 in (0 - 12.7 mm)
Resolution	0.0001 in / 0.001 mm
Accuracy	±0.0001 in / ±0.003 mm
Hysteresis	0.0001 in / 0.002 mm
Repeatability	0.0001 in / 0.002 mm
Measuring Force	1.5 N or less
Stem Diameter	3/8 in (9.52 mm)
Stem Thread	#4-48 UNF
Back Type	Flat Back (No Lug)
IP Rating	IP42
Display	6-digit LCD, sign, 9 mm character height
Encoder Type	ABSOLUTE electrostatic capacitance linear encoder
Battery Type	SR44 (1 pc.)
Battery Life	Approx. 18,000 hours
Data Output	Digimatic (SPC)
Max Response Speed	Unlimited
Standards	ASME/ANSI/AGD
Physical Weight (kg)	0.14
Dimensions L x W x H (cm)	10.78 x 5.9 x 2.5

Industrial Applications

1. Automotive Brake Disc Runout Verification

Measuring the axial runout of automotive brake rotors during quality control processes [4.1.8]. The flat back design allows the indicator to be rigidly mounted on a magnetic comparator stand while the spindle traces the rotating surface.

Problem Solved

Traditional dial indicators can introduce operator reading parallax errors and require manual zero-setting on every part. The absolute linear encoder provides immediate absolute positioning without re-zeroing, while the 0.0001" resolution and ±0.0001" accuracy ensure micro-deviations are reliably captured.

Axial RunoutBrake Rotor InspectionABSOLUTE Encoder0.0001" ResolutionComparator Stand Mounting

2. Precision PCB Thickness Uniformity Testing

Assessing the thickness consistency of delicate multi-layer printed circuit boards (PCBs) across multiple sampling points. The low measuring force ensures that the carbide-tipped contact point does not indent, scratch, or damage the soft copper cladding.

Problem Solved

Using high-force gauges on thin PCBs can deform the board and result in false thinness readings. The ID-S indicator provides highly repeatable readings (0.002 mm repeatability) with a very gentle 1.5 N force, and the flat back allows it to be integrated into custom benchtop gaging fixtures.

PCB Cladding ThicknessLow Measuring Force1.5N Spindle ForceSubstrate UniformityRepeatability 0.002mm

3. Medical Device Catheter Hub Dimensional Inspection

Performing rapid dimensional verification of injection-molded plastic medical components, such as catheter hubs and luers, where the critical sealing diameter must be held within tight tolerances.

Problem Solved

Quality inspectors on manufacturing floors need to quickly swap and measure parts without wasting time re-zeroing the gauge. The ABSOLUTE scale remembers its zero position indefinitely (approx. 18,000-hour battery life). The SPC Digimatic data output allows instant transmission of data to a central quality management system (QMS) for real-time statistical process control.

Medical Molding QualityLuer Lock InspectionSPC Digimatic OutputOrigin-SetASME/ANSI Type