Why is it called a "plum-bob"?

[Sandy]

A weight on a string used to assure that vertical lines are vertical/and or straight. Usually weight is made of lead.

 

[Lordpercywoosterxxviii]

a bob is the weight on the end and its called a bob as it bobs around and it is a plumb because the "plumb" in "plumb-bob" comes from the fact that such tools were originally made of lead (Latin plumbum, probably through French plomb). The adjective "plumb" developed by extension

 

[Lordpercywoosterxxviii]

a bob is the weight on the end and its called a bob as it bobs around and it is a plumb because the "plumb" in "plumb-bob" comes from the fact that such tools were originally made of lead (Latin plumbum, probably through French plomb). The adjective "plumb" developed by extension

 

[rockdakiss]

The "plumb" in "plumb-bob" comes from the fact that such tools were originally made of lead (Latin plumbum, probably through French plomb).

 

[Lordpercywoosterxxviii]

a bob is the weight on the end and its called a bob as it bobs around and it is a plumb because the "plumb" in "plumb-bob" comes from the fact that such tools were originally made of lead (Latin plumbum, probably through French plomb). The adjective "plumb" developed by extension

 

[Larry]

Because its made of lead. Plumbum is latin for lead. The atomic symbol for lead is Pb. In ancient times lead was used for pipes, its still called plumbing. The "bob' part i'm not sure about.

 

[Larry]

Because its made of lead. Plumbum is latin for lead. The atomic symbol for lead is Pb. In ancient times lead was used for pipes, its still called plumbing. The "bob' part i'm not sure about.