36 Pipe Wrench

pipe wrench
adjustable wrench for gripping and turning a pipe; has two serrated jaws that are adjusted to grip the pipe
The pipe wrench, or Stillson wrench is an adjustable wrench used for turning soft iron pipes and fittings with a rounded surface. The design of the adjustable jaw allows it to rock in the frame, such that any forward pressure on the handle tends to pull the jaws tighter together.
Screws pipes into elbows or other threaded devices. Jaws actually bite into the surface to hold it for turning. They should never be used on plated pipe installations because they will badly mar the finish.

36
thirty-six: being six more than thirty
Year 36 (XXXVI) was a leap year starting on Sunday (link will display the full calendar) of the Julian calendar.
In Hungary the standard lengths for area codes is two, except for Budapest (the capital), which has the area code 1. Subscribers' numbers are six digits long in general, numbers in Budapest and cell phone numbers are seven digits long.