U-shaped thermometer tube. Magnifying lens tubes have special metal indices for registering the highest and lowest readings. These are reset by a small magnet. Temperature range –20°C to +50°C and approx. 350 mm in overall length.
U-shaped thermometer tube. Magnifying lens tubes have special metal indices for registering the highest and lowest readings. These are reset by a small magnet. Temperature range –20°C to +50°C and approx. 350 mm in overall length.