#2989: Physics Lab Thermostat

[A black circular dial is shown with a white indicator line at the upper right. The label above the dial, enclosed in a rectangular box, says:]

Local Boltzmann Constant

[The two extremes of the dial are labeled as follows, the first value on the left and the second value on the right:]

1.418×10^-23 J/K

1.351×10^-23 J/K

[The indicator line is pointing to a position on the dial somewhere around 1.375×10^-23 J/K (between the 12th and 13th large ticks clockwise out of 19 total).]

[Caption below the panel:]

Physics Lab Thermostat