Quick Answer: The Poisson’s Ratio of Rubber Apparatus finds Poisson’s ratio from the stretching of a rubber tube about 1000 mm long, using a scale with pointer for elongation and a burette port for volume change. Loads hang from a steel hook and hanger.
Last updated: October 2026
Key Features
Vulcanised rubber tube specimen, about 1000 mm (1 metre) long
Metric scale with adjustable pointer for length change
Burette/manometer connection port for measuring volume change
Stainless steel hook and hanger for slotted weights
Powder-coated cast iron base with levelling screws
Technical Specifications
Specification
Value
Specimen
Vulcanised rubber tube, approx. 1000 mm
Length measurement
Metric scale with adjustable pointer
Volume measurement
Burette/manometer connection port
Loading
Stainless steel hook and hanger for slotted weights
Base
Cast iron, powder-coated, levelling screws
About This Product
The rubber tube is filled with water and loaded in steps. The extension read on the scale gives the longitudinal strain, and the change of water level in the burette gives the change in volume, from which the lateral strain and Poisson’s ratio of rubber are calculated. Readings across the loads can also be plotted as a stress-strain graph.
Frequently Asked Questions
How is volume change measured on the Poisson’s Ratio of Rubber Apparatus?
The water-filled rubber tube connects to a burette through a port, and the change in water level shows the change in internal volume as the tube stretches.
