"Complete Meter Stick Optics Bench"

A white enamel finished, high-quality hardwood meter stick, with permanently engraved scales.

Thick Plastic Ideal for Classroom Use.

This 30.5 cm (12") wooden ruler has a double bevel and a pencil groove.

With English and metric scales, this ruler also features a comparison scale for Fahrenheit and Celsius temperature readings. Size: 15cm.