For investigate unbending nature. Two strong andtwo empty barrels every 10 cm longaccurately fitting the drag of ahollow metal tube 4() cm long are given. The tube is alsofitted with wire hurl and mirror, graduated scale andverniers on sliding weights. Finish with ceilingattachment.

Manufacturers and Suppliers of Rigidity of Wires (Searles Pattern) in Algeria, Argentina, Australia, Bahrain, Bangladesh, Belgium, Bhutan, Brazil, Cambodia, Cuba, Cyprus, Denmark, Ecuador, Egypt, Ethiopia, Finland, France, France, Georgia, Germany, Ghana, Hungary, Iceland, Italy, Japan, Jordan, Kenya, Kuwait, Malaysia, Philippines, Tanzania, Uganda