For surface temperatures of solids, also for liquids, gases and semi-solids. Probably our best general purpose probe. Welded stainless-steel shaft, plastic handle. Tip is .028 in. diameter bent at right angle to probe to facilitate accurate surface measurements. 5 ft. lead. Immersible. Max tip temp. 240°C (464°F). Time constant 0.15 secs. Not isolated.