How hot (temperature) does the basking spot get if placed 12 inches away?

Using a 'Fluker's Ceramic Repta-Clamp Lamp with Switch 8.5-in with reflector for the 60 watt Ceramic Heater, the temperature 12” away is 86 degrees Fahrenheit. The ambient temperature in the room was 72 degrees Fahrenheit. There are a few variables that can affect the basking site temperature of ceramic heaters and incandescent bulbs. The ambient temperature of the room, the type of lamp used, the size and type of the enclosure, and what type of top the customer is using. Just keep that in mind. But our temperature above is a good general reading the customer can use. It is always important to use a thermometer to measure the temperature before placing the pet inside the enclosure. For the ceramic heaters, it is a good rule to wait 15-20 minutes after turning on to measure the temperature.