Meteorological thermometer according to BS 692, type Minimum with dark glass

Meteorological thermometer according to BS 692, type Minimum with dark glass index, Min.3/C, solid stem, -50+25:0,5°C, white backed, alcohol filled, round bulb diameter max.16,5mm, total immersion, durable pigment, in glass tube protection 315-345xmax.16,5mm with ring device at the upper end of the solid stem thermometer, suitable for government verification more