Surgical Measuring Instruments
Surgical precision. Down to the micrometer.
Available now. Stainless Steel or Titanium.
Closer Look
Castroviejo (Epker) Caliper – Stainless Steel
Our Vision
Precise measurements are the foundation of every successful surgical plan. Our measuring instruments are crafted with the accuracy that every procedure deserves.
Designed and manufactured in Germany. With the dedication and standards that surgery demands.
Highlights
Millimeter-accurate graduation and finely adjusted measuring tips. For reliable measurements directly in the surgical field.
Laser-engraved measuring scale that remains perfectly readable even after hundreds of sterilization cycles.
Non-magnetic and MRI-compatible. The titanium coating increases surface hardness and reduces weight.
Balanced weight and optimal grip design for fatigue-free measuring during hours-long operations.
Castroviejo Caliper, Ophthalmic Caliper, Yasargil Series – the right instrument for every specialty.
CE-certified. MDR-compliant. Each instrument undergoes over 40 manufacturing steps and is individually tested.
Materials
Surgical Stainless Steel – Proven and autoclavable. Robust, sterilizable, long-lasting. The standard for daily clinical use with permanently readable graduation.
Titanium – Lightweight, non-magnetic, MRI-compatible. The titanium coating increases surface hardness and significantly reduces weight. Ideal for procedures near MRI scanners.
Our Mission
We give surgeons the instruments they deserve. Not the cheapest. The best.
Every caliper is hand-adjusted and calibrated. The laser-engraved scale remains perfectly readable after hundreds of autoclave cycles. No instrument leaves our facility that we wouldn't use in the OR ourselves.
Precision Measurement
Our calipers are the result of years of collaboration with surgeons. From the Castroviejo design for ophthalmic procedures to the Yasargil series for neurosurgery – every detail is optimized for maximum measurement accuracy.
Whether straight or curved tips, standard or miniature format: each variant was developed for specific surgical requirements and delivers reliable measurement results.
View all measuring instruments ›
Titanium Series
The titanium coating is not just a visual statement. It triples the surface hardness, makes the instrument non-magnetic and significantly reduces weight.
The distinctive blue of our titanium series stands for our promise: uncompromising quality that you can see and feel. Ideal for procedures near MRI scanners and neurosurgery.
Our Values
We measure in micrometers, not millimeters. Every instrument is calibrated and tested – because in surgery there is no room for compromise.
Behind every instrument is a person being operated on. We carry this responsibility with pride – and with the highest quality standards.
We combine traditional craftsmanship with cutting-edge laser technology. The result: measuring instruments that redefine the standard in surgery.
Our measuring instruments in action – from ophthalmology to plastic surgery.
The Castroviejo Caliper is the gold standard in eye surgery. Precise measurements for incisions, grafts and implants – down to the micrometer.
The Yasargil measuring instruments series provides precise measurements in deep surgical fields. Indispensable for planning and performing neurosurgical procedures.
Precise measurements for valve replacement and vascular anastomoses. Our calipers enable exact sizing directly in the surgical field.
Exact measurements for symmetrical results. Our calipers enable precise markings and distance measurements in reconstructive and aesthetic procedures.
| Variants | Straight Tips, Curved Tips, Mini Straight, Mini Curved, Titanium |
| Material | Stainless Steel, Titanium |
| Tips | Straight, Curved |
| Lengths | 85mm (Mini), 172mm (Standard) |
| Measuring Range | 0–40mm (Standard), 0–20mm (Mini) |
| Graduation | Laser-engraved, 1mm increments |
| Sterilization | Autoclavable up to 134°C |
| Application | Ophthalmology, Cardiac Surgery, Plastic Surgery |
| Certification | CE-certified, MDR-compliant |
| Variants | Standard Scale, Titanium Standard Scale |
| Material | Stainless Steel, Titanium |
| Length | 85mm |
| Measuring Range | 0–20mm |
| Graduation | Laser-engraved, Standard Scale |
| Sterilization | Autoclavable up to 134°C |
| Application | Ophthalmology, Eye Surgery |
| Certification | CE-certified, MDR-compliant |
| Variants | Straight, Curved, Titanium Straight |
| Material | Stainless Steel, Titanium |
| Tips | Straight, Curved |
| Length | 150mm |
| Measuring Range | 0–30mm |
| Graduation | Laser-engraved, 1mm increments |
| Sterilization | Autoclavable up to 134°C |
| Application | Neurosurgery, Microsurgery |
| Certification | CE-certified, MDR-compliant |
Product Catalog
3 models. 10 variants. Made in Germany.
The classic among surgical measuring instruments. Precise graduation in various sizes and materials.





Specifically designed for ophthalmology. Compact measuring instruments for precise eye measurements.


Titanium, standard scale, 85mm – lightweight and non-magnetic
Neurosurgical measuring instruments. Precise measurements in deep surgical fields.



Comparison
![]() Castroviejo Caliper |
![]() Ophthalmic Caliper |
![]() Yasargil Series |
|
|---|---|---|---|
| Material | Stainless Steel, Titanium | Stainless Steel, Titanium | Stainless Steel, Titanium |
| Tips | Straight, Curved | Standard | Straight, Curved |
| Lengths | 85mm, 172mm | 85mm | 150mm |
| Graduation | Laser-engraved, 1mm | Laser-engraved, Standard | Laser-engraved, 1mm |
| Application | Ophthalmology, Cardiac, Plastic Surgery | Ophthalmology | Neurosurgery |
| Titanium Available | ✓ | ✓ | ✓ |
| Mini Variant | ✓ | — | — |
| Variants | 5 | 2 | 3 |