"Wardssci090005"

A versatile marking tool.

Teach Students to Quickly Determine Tree Heights

Measures in metric units.

Used to Examine Wood Quality and Measure Growth Rates

This doublet lens system at 10X provides sharp magnification.

Combine Hydroponics and the Study of Mineral Deficiencies

Determine the Diameter of Trunks by Measuring their Circumference

An absolute must when conducting field studies.

Battery operation makes the unit completely portable.

This exceptional guide to North American insects is a benchmark against which all other guides are measured.