The Käfer FD50 digital fork thickness gauge is a digital dial gauge with very high resolution (0.001 mm) and lifting device, a large display and RS 232 or USB data output; 50 mm deep throat.
- Digital dial gauge: 0.001 mm / .00005″ resolution
- Measuring range: 12.5 mm / .500″
- Throat depth: 50 mm
- Data output: RS 232 or USB
- Maximum error: 5 µm
- Lifting device: contact force 0.7 N ±20%
- Power supply: 3 V lithium battery (8000 h life)
The FD50 is the digital version with high resolution (0.001 mm): it combines the precision of reading to the thousandth with the convenience of the digital display and the RS 232 or USB data output. The maximum error is only 5 µm.
Powered by a 3 V lithium battery (8000 h life), with a contact force of 0.7 N ±20% thanks to the lifting device. The FD50 TOP and FD50/25 (range extended to 25 mm) variants are available. With the 2.1670 column stand it becomes a bench instrument.
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Technical characteristics
| Value | |
| Instrument type | Fork thickness gauge with high resolution digital dial gauge and lifting device |
| Resolution | 0.001 mm / .00005″ |
| Measuring range | 12.5 mm / .500″ (FD50/25 variant: 25 mm) |
| Throat depth | 50 mm |
| Power supply | 3 V lithium battery |
| Battery life | 8000 h |
| Data output | RS 232 or USB |
| Operating temperature | +5 … +40 °C |
| Maximum error | 5 µm |
| Contact force | 0.7 N ±20% |
| Standard contact point | shape c |
| Optional contact points | shapes a, b, d or e |
Part numbers, accessories and spare parts
Codes for ordering the FD50 and its accessories. The part numbers will be added when available.
Instrument – complete kit
| Part number | Description | |
| — | FD50 | High resolution digital fork thickness gauge (0.001 mm), 12.5 mm range, 50 mm throat |
| — | FD50/25 | measuring range extended to 25 mm |
Accessories
Photo
Part number
Description
—
Contact points (shapes a, b, c, d, e)
Interchangeable contact points; shape c as standard, shapes a/b/d/e at no extra charge
—
2.1670 column stand
Stand that converts the handheld thickness gauge into a bench instrument
—
DCPRMD 232 / USB data cable
Data connection cable (RS 232 or USB) for transferring the measurements to a PC
—
Replacement digital dial gauge
Replacement digital dial gauge, supplied without contact point and lifting device
Machine vision systems for quality control on the production line combine cameras and dedicated LED illuminators: ring and coaxial lighting ensures sharp, repeatable images for the automatic detection of defects.
| Document | Type |
| Käfer fork thickness gauge catalogue (metric) | Catalogue (PDF) |
Frequently asked questions
Digital resolution 0.001 mm / .00005″, with a maximum error of 5 µm.
12.5 mm; the FD50/25 variant extends the range to 25 mm.
Through the RS 232 or USB output to a PC.
The 3 V lithium battery lasts 8000 h.
Contacts & Information
Contact for general information : info@roder.it
Machine Vision Division of RODER : www.rodervision.com
RODER Instruments Division : www.innovacheck.com
More about RODER : about us
The information contained in this website is provided for information purposes only. Although it has been prepared with the greatest care, it does not constitute a contractual offer or a binding commitment to supply. It may contain transcription, translation or typographical errors. For precise and up-to-date information, please contact our company directly.
Note: Some images on this website have been intentionally generated using artificial intelligence (AI). This is because, for many applications and projects, photographs of the actual installation or system cannot be disclosed owing to confidentiality agreements, contractual clauses and non-disclosure agreements (NDAs).
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