Ruler necklace metric

Did you know that the last "measured meter" can be found right here in Paris? It is embedded in a stone wall so people can come and use it as a model to make their own measuring sticks in the past. I designed this necklace with precision in mind; you can use it to measure things to the nearest millimeter (or an accuracy of 1/16 ”if you opt for the imperial version!). Height: 2cm, width: 10cm, depth: 0.3cm, chain length: 45cm