Least count of a thermometer
A laboratory thermometer from -10 °C to 100 °C has 110 divisions, so each is 1 °C.
Least count
Least count. The smallest value an instrument can read. It is the smallest error you can make in one reading. Least count = range / number of divisions.
Least count
1°C
110 °C / 110 = 1 °C
Least count = range / number of divisions.
Least count = range / number of divisions
A thermometer is used for temperature, in degrees Celsius. The working for the textbook numbers is 110 °C / 110 = 1 °C.
Other instruments
Thermometer: quick answers
What is the least count of a thermometer?
A laboratory thermometer from -10 °C to 100 °C has 110 divisions, so each is 1 °C. Least count = range / number of divisions.
How do I find the least count of my thermometer?
Least count = range / number of divisions. For the instrument in front of you, read the scale and use your own numbers in the tool above.
Why does the least count matter?
The least count is the smallest reading you can make, so it sets the smallest error in a single measurement. Thermometer measures temperature, in degrees Celsius.