Quick Answer: The Bar and Gauge illustrates expansion by heating and contraction by cooling, using an iron bar on a wooden-handled support rod and a brass gauge with a cut-out and a hole sized to the bar when cold.
Last updated: October 2026
Key Features
Iron bar, (L) 108 mm x (D) 12.7 mm
Bar mounted on a support rod fitted with a wooden handle
Brass gauge, 150 mm x 38 mm
Gauge cut-out just admits the bar lengthways
Gauge hole passes the bar endways when cold
Overall length approx. 225 mm
Technical Specifications
Specification
Value
Bar
Iron, (L) 108 mm x (D) 12.7 mm
Gauge
Brass, 150 mm x 38 mm
Handle
Wooden, on support rod
Length
225 mm approx.
About This Product
The apparatus is used to illustrate expansion by heating and contraction by cooling. Its brass gauge has a cut-out that just admits the iron bar lengthways and a hole that passes it endways when the bar is cold, and the wooden handle allows the bar to be held. The Bar and Gauge is available for supply within India and for export to Bhutan, Kyrgyzstan, Indonesia, Colombia, Sudan and Iran.
.jpg)
.jpg)
.png)
