Brass Bar and Gauge Apparatus with Insulating Handle
AUD 47.50(Ex GST)
AUD 47.50(Ex GST)
- Classic brass bar and gauge apparatus for thermal expansion demonstrations
- Demonstrates the effect of heating metal
- Shows expansion in both length and diameter
- Heated bar cannot fit through the matching gauge
- Chilled gauge can contract so the bar no longer fits correctly
- Brass bar and gauge are carefully machined and matched for experiment performance
- Insulating handle supports safer handling during approved demonstrations
- Unlike ball and ring apparatus, the bar and gauge are not chained together
- Suitable for school, university and teaching laboratory use
- Useful for heat, solids and thermal physics experiments
- Bar and gauge only, heating and cooling accessories are not included
- Use under appropriate laboratory or educational supervision
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- Description
Description
The Brass Bar and Gauge Apparatus with Insulating Handle, also known as a bar and gauge thermal expansion demonstrator, is designed to show the effect of temperature change on metal dimensions. This classic apparatus uses a matched brass bar and gauge to demonstrate that metals expand when heated and contract when cooled. When the brass bar is heated, it expands and can no longer fit the gauge correctly in both length and diameter. When the gauge is chilled in ice, the gauge contracts, which can also prevent the bar from fitting through the gauge as expected.
The IEC item is carefully machined and matched for size so that the experiment works reliably. Accurate matching is important because poorly made bar and gauge sets may not demonstrate the intended expansion effect clearly. Unlike a ball and ring apparatus, the bar and gauge are not chained together, so both parts should be handled and stored carefully after use. This apparatus is suitable for school science laboratories, university teaching laboratories and physics classrooms studying heat, solids, thermal expansion, contraction and material behaviour. Users should confirm the approved heating method, cooling method, handling procedure and supervision requirements before use.
The brass components may become hot during the demonstration. Use the insulating handle, heat-resistant gloves, tongs or approved handling tools, and allow the apparatus to cool before storage. Do not touch heated metal directly, overheat the apparatus, quench hot metal unsafely or use near flammable materials without proper controls. This product is intended for laboratory or educational settings only and should be used under appropriate supervision. This item is supplied as the brass bar and gauge apparatus with insulating handle only. Burner, lighter, ice, beaker, tongs, heat mat, gloves, PPE and additional accessories are not included unless specified separately.
LabChoice Australia supplies Brass Bar and Gauge Apparatus and thermal physics demonstration equipment for school science laboratories, university teaching laboratories and educational facilities requiring practical tools for heat expansion experiments.
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What Our Customers Say
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We ordered a set of customised BORO 3.3 borosilicate glassware for our teaching labs, and LabChoice Australia exceeded every expectation. From the first consultation to final delivery, their team listened carefully, offered expert advice, and ensured every piece matched our specifications perfectly.
The clarity and precision of the glassware are exceptional, and the quick turnaround made setup effortless. It’s refreshing to work with an Australian supplier who genuinely understands laboratory needs and takes pride in quality craftsmanship. We’ll definitely be returning to LabChoice for future glassware requirements
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Our lab required high-precision BORO 3.3 glassware for analytical testing, and LabChoice Australia delivered outstanding results. The ordering process was simple, communication was clear, and every beaker and flask arrived perfectly calibrated and ready for use.
The quality of the glass is exceptional — resistant to heat, easy to clean, and consistently accurate in measurement. It’s reassuring to know there’s an Australian supplier that combines scientific precision with genuine customer care. I’d recommend LabChoice to any research team looking for dependable labware
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We needed a set of customised borosilicate glassware for a specialised project, and LabChoice Australia delivered exactly what we envisioned. The team worked closely with us from design to production, ensuring every detail met our specifications. The craftsmanship is exceptional, and the turnaround time was impressive. It’s reassuring to know we can rely on them for unique, made-to-order pieces
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LabChoice Australia has completely changed the way we source our lab glassware. The quality is consistently top-notch, and every piece meets the precision we need for reliable results. Their team knows their stuff, answers our questions quickly, and always goes the extra mile to help — they’re more like partners than just a supplier.
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We trust LabChoice Australia because they deliver every time. Their borosilicate glassware is durable, accurate, and perfect for the high-heat work we do. Everything arrives well-packed with clear specs, so there are never surprises. It’s reassuring to deal with a supplier who understands both compliance and the demands of a busy lab