An extraordinary black SUS304 stainless steel card, engraved with the full Periodic Table of elements and selected scientific data.
A handy unit conversion tool and a solid record of units in our era, showing 79 units, 6 equations and 20 metric prefixes.
Consists of 8 awesome translucent unit conversion cards.
Balanced hollow dice, available in stainless steel, brass and silver.
Made of Taiwanese quartz mosaic tiles and anisotropic magnets.