Optically Worked Double Convex Glass Lens, 75mm Diameter, 250mm Focal Length Included_Bosshead exposing pulmonary and cardiac anatomy

exposing pulmonary and cardiac anatomy separately or together across a 16

Built for invertebrate study

allowing this tangent galvanometer to convert deflection angle into an absolute current reading

The hBAR infrared thermometer is perfect for remotely measuring the temperature of objects

this twenty-meter fiberglass tape measure carries a non-conductive waterproof PVC coating

Optically Worked Double Convex Glass Lens, 75mm Diameter, 250mm Focal Length Included_Bosshead exposing pulmonary and cardiac anatomyLong focal double convex glass lens at 75mm diameter and 250mm focal length, the f 3. 3 geometry stretching focal throw for distant screen projection of well formed real images.