Geophysical and geotechnical instruments

12PK Volcanic Tuff Rock Specimens, ñ1L

12PK Rhyolite Rock Specimens, ñ1L

12PK Pumice Rock Specimens, ñ1L

12PK Obsidian Rock Specimens, ñ1L

12PK Pink Granite Rock Specimens, ñ1L

12PK Andesite Rock Specimens, ñ1L

12PK White Sandstone Rock Specimens, ñ1

12PK Red Sandstone Rock Specimens, 1

12PK Gray Limestone Rock Specimens, ñ1L

12PK Limestone Chalk Rock Specimens, ñ1

12PK Arkose Sandstone Specimens, ñ1L

Hydrometers are used to determine the specific gravity of a liquid. Consists of a long glass tube containing a ballast at the base of the float bulb and graduations on the stem.