Rotring Pen Set

Spiegel Relaskop Tool

Material : Metal

Measurement Range : Can measure tree height diameter and distance

Display Type : Other, Analog

Accuracy : High precision measurements

Range : Up to several meters for forestry measurements

Resolution : Precise angular readings

Spherical Densiometer

Material : Acrylic Dome, Metal or ABS Body

Measurement Range : 0 to 100% Canopy Density

Display Type : Other, Mirror with Etched Grid

Accuracy : Estimate dependent on grid counting method; typically within 5%

Resolution : 1% (Grid Square Approach)

Abney Level

Material : Metal and durable plastic

Measurement Range : 0 90

Display Type : Analog scale with vernier, Other

Accuracy : High precision for angle measurements

Range : 0 90

Resolution : 0.1

Digital Planimeter

Measurement Range : Wide range for map measurements

Display Type : Other, Digital

Accuracy : High

Range : Supports different map scales

Resolution : Precise