...three times its thickness, without cracking. When nicked or bent its fracture must be mostly fibrous. All facilities for inspection of iron and workmanship...He shall furnish, without charge, such specimens, or full sized pieces of the several kinds of iron to be used as may be required to determine their...

...injurious and unsightly -tarns blisters, buckles, slivers, cinder spots and imperfect, or crooked edges. All facilities for inspection of iron and workmanship shall be furnished by the contractor. lie shall furnish free of charge such specimens of the several kinds of iron to be used as may be required...