Testboy 75 Layer Thickness Tester

Aluminium - Corrosion resistant lightweight metal

Brass - A copper and Zinc Alloy

PVC - Polyvinyl Chloride - A type of insulating plastic

Copper - A metal element with a chemical formula of CU. A excellent conductor of electricity and heat.

Zinc - A chemical element, a silver metal. Corrosion resistant. Combined with Copper makes Brass

Steel - An alloy made predominately of Iron combined with <2% carbon

Quartz - The second most abundant material on earth

Grey - A colour often associated with old age (going grey)

Glass - A solid, typically transparent. Brittle and used in windows. The first patent granted in the UK was for Glass.

iron - An electrical deviced used for removing creases from fabrics

iron - A chemical element (FE). The most common element on earth

Accurate - A measurement of precision when all elements are correct.

Layer - Adding extra quantities of materials for extra practical benefits, e.g. warmth.

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