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These 1/4" thick glass plates are excellent for testing minerals. After scratching the 1"x 2" plates, students separate hard and soft minerals.

This set has four screen mesh sizes (5, 10, 60, 230) and will let students separate and grade soil and rock samples in order to determine the make-up of soil strata. Kit includes bottom pan and lid with Teacher's Guide and sieves.

This set has six screen mesh sizes (5, 10, 35, 60, 120, 230) and will let students separate and grade soil and rock samples in order to determine the make-up of soil strata.

Storage compartment holds 3/8˝ stack of papers. Strong metal clip holds papers and forms in place. Sturdy piano hinge, smooth, rounded corners. Made from recycled aluminum with an anti-microbial coating. Clip is on 8-1/2˝ side.

A tough pack used by many field professionals. Made from Cordura nylon, with ballistic nylon reinforcing in key wear and stress areas.