Thermometer similar to ASTM 19C ACCU-SAFE, +49+57:0.1 °C, ID total, TL 300 mm

Precision thermometer, similiar to ASTM 19C ACCU-SAFE, stem form, diameter: 6-8 mm, measuring range: +49+57 °C in 0.1 °C, capillary: white back round, blue filling, immersion depth: total, total length: 300 mm, suitable for calibration