Dating clay pipe bowls by angle
A tobacco pipe, often called simply a pipe, is a device specifically made to smoke tobacco.It comprises a chamber (the bowl) for the tobacco from which a thin hollow stem (shank) emerges, ending in a mouthpiece (the bit).The bowl (1) which is the cup-like outer shell, the part hand-held while packing, holding and smoking a pipe, is also the part "knocked" top-down to loosen and release impacted spent tobacco.
Less common are other dense-grained woods such as cherry, olive, maple, mesquite, oak, and bog-wood.
Meerschaum (hydrated magnesium silicate), a mineral found in small shallow deposits mainly around the city of Eskişehir in central Turkey, is prized for the properties which allow it to be carved into finely detailed decorative and figural shapes.
It has been used since the 17th century and, with clay pipes, represented the most common medium for pipes before the introduction of briar as the material of choice in the 19th century.
Unusual, but still noteworthy pipe materials include gourds, as in the famous calabash pipe, and pyrolytic graphite.
Metal and glass are uncommon materials for tobacco pipes, but are common for pipes intended for other substances, such as cannabis.