ETI 814-132 Comparator

Aluminium - Corrosion resistant lightweight metal

Black - A colour which does not emit any colour of the spectrum. Black absorbs all frequencies of the spectrum.

Hand - A part of the body at the end of the arm

Hand - A pointer which indicates time on a clock face

100mm - the equivilent of 10cm

Matt - A non glossy colour that light wont reflect off.

Solid - Something that is firm and not liquid, a hard shape that cannot be changed easily.

Reference - To prove evidence with a back up source.

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