Paleo Reference Card and Scale Bar

This heavy-duty aluminum reference card is laser-etched with numerous facts, figures, and formulas that vertebrate paleontologists frequently use. The reverse side features imperial and metric scale bars, diameter gauges, and a 3cm x 3cm grid area with 1mm squares, which are useful for measuring very small objects. The card’s size is comparable to a standard credit card, making it convenient to carry in any wallet, ensuring that you always have it handy.