Abstract: An apparatus including mechanisms for holding or guiding a fence post (or other type of post), in an essentially vertical orientation and in a relatively loose manner so that the apparatus can readily be removed part way through the post-driving activity and so that the downward driving force does not damage the apparatus. The apparatus is expandable from a compact transport configuration to a free-standing use configuration, and includes an assembly head having a connecting means for connecting a pair of pivotable 1st and 2nd support legs (each having a foot end and having an apex end pivotably connected to the assembly head and essentially opposing the apex end of the other support leg); a 3rd pivotable support leg having a 3rd foot end and a 3rd apex end pivotably connected to the assembly head (and enabling the apparatus to stand when all three support legs are pivoted outwardly); and a stabilizer support downstanding from the assembly head, and including a lower connection end.

Abstract: A control circuit for a fluid-filled heating pad is described. The control circuit is unique in that it includes a thermistor that is located in close proximity to the heating pad. The circuit is also unique in that it includes a single high-precision reference resistor to self-calibrate the control circuitry.