By eHow Home & Garden Editor
Rate: (42 Ratings)
A block (a wood or metal unit containing one or more pulleys) and tackle (an assembly of blocks and ropes) permits multiplication of force to lift or move heavy objects. This amazingly simple device - a prime tool of ancient builders - remains extraordinarily useful in the modern world.
eHow Home & Garden Editor
Comments
DreaMajor said
on 6/13/2008 The explanation is simple and accurate, but it needs a simple drawing, which can readily be found elsewhere. However, this article mis-named; is not "How to Build" but rather "How to Assemble and Use".
- EDS, Washington, DC
Bill100727 said
on 4/29/2008 I disagree, make a drawing yourself, quite simple, a little bit of imagination is required, that's all.
Bill Whicker, Fairfield West, NSW Australia.
GMessier said
on 10/28/2007 This is ALMOST useless without a picture or drawing. Off to another website.