Lab Thermometer 300mm -10 to 110C
Lab Thermometer 300mm -10 to 110C
Student's name
First and last name, and class if you know it. This goes on the pack label.
Pickup available at Mega DC – Tweed Heads South
Usually ready in 24 hours
The long one - 300mm, red spirit, made in the UK
Red spirit thermometer, -10 to +110 degrees C in 1 degree increments. 300mm long, 76mm partial immersion. No mercury.
The length is the reason to buy this one rather than the 205mm. At 300mm the scale stays out of a tall beaker, above a bunsen, or clear of the rim of a deep container - so a student can read it without lifting it out and losing the temperature they were measuring.
Red spirit rather than mercury: readable from a distance, and nothing hazardous if the tube breaks. One degree increments are the right resolution for school work - fine enough to plot a cooling curve, coarse enough to read quickly.
How to read an immersion depth. A partial-immersion thermometer is calibrated to be accurate when the liquid comes up to a marked depth on the stem - 76mm here - not when the whole thing is under. Push it further in or leave it shorter and the reading drifts. It is the single most common reason a class gets three different answers off three identical thermometers.
Made in the UK. On a measuring instrument that matters, because accuracy is the entire product.