Collyer Pelvimeter 30cm

Clinical Application

This caliper is designed for direct measurement of pelvic dimensions and related anthropometric landmarks in obstetrics and gynecology. It is used to measure interspinous, intertrochanteric and inlet/outlet distances to assist in clinical assessment of pelvic capacity, preoperative planning, and documentation during labor evaluation or pelvic surgery. The 30 cm span accommodates a wide range of adult pelvic measurements without requiring multiple instruments.

Design & Configuration

The Collyer pattern uses a caliper geometry with opposed arms that permit precise span adjustment and repeatable placement on bony landmarks. The extended length provides improved reach and leverage for measurements taken across the pelvic brim or between widely separated anatomical points. A stable locking or adjustment mechanism and fine arm alignment minimize parallax and movement, improving measurement consistency in the clinical setting.

Instrument Specifications

• Instrument type: Pelvimeter (caliper)
• Pattern / model: Collyer
• Overall length: 30 cm
• Configuration: Caliper-style adjustable arms for span measurement
• Typical use: Obstetrics, gynecology, pelvic anthropometry
• Tip style: Caliper tips for bony landmark contact
• Reusable: Yes
• Material: Surgical-grade stainless steel

Material & Construction

Manufactured from surgical-grade stainless steel for corrosion resistance and repeated sterilization. The instrument is engineered for durable, reusable clinical use with precision-machined contact surfaces to preserve measurement accuracy over time.

Quality & Compliance

Manufactured by FDA-registered OEM facilities and produced under strict quality control standards.

Brand Comparison

Comparable in form and function to equivalent instruments offered by major US medical suppliers.

Availability & Returns

• In-stock lead time: ships within ~1 week
• Out-of-stock lead time: 2–4 weeks
• Returns: 30-day return policy