Easthampton resident Vinny Valetutti’s constructed a 30-foot-tall “Sea Level Rise Ruler” to raise awareness about the dangers of rising sea levels due to climate change and ice caps melting.

Ensso has designed an all-in-one fountain pen with scale ruler for architects and engineers, ... most common scales used by architects and engineers. There are six metric scales (1:20, 1:50, 1: ...