Thus, the lid (5) is tightly clamped by the two pressing members (2), (4), the lid (5) is then opened when the base (1) is rotated with the lid kept clamped between the pressing members.

The remaining two clamps are used exclusively for preparation of sample bundles.

The gripping surfaces 15 of the handle 3 and Jaw 2 grip surface 7 can be fitted with removable jaw covers called soft Jaws.

The apparatus comprises four clamps (9, 12, 16, 17) arranged along a common axis and operable independently of each other.

Rather, one should let it lie loose near the foot to avoid it from bending downwards.

The pliers are substantially comprised of jaws (4) provided with claws (5), biased against each other by an adjustable tension spring (3), arranged between the arms (1).

One of the clamps, the 'fixed' clamp (9), is positioned at one end of the apparatus, and is movable along the common axis relative to the remainder of the apparatus.

The ends of the claws (5) are tapered and offset so as to facilitate the insertion of the jaws (4) between the object and the handling of the object with the pliers.

Grips selected should be able to hold the specimen firmly, without causing any specimen slippage or breaks near the jaws.

The first solution is to use commercial soft jaws, often magnetic and rubber coated to avoid injuring the wooden piece.

The claws (5) are fixed on the jaws (4) by a turned down edge (10) thicker than the protuberance (12) located at the junction of the arms (1) with the jaws (4).

The wet specimens were then tested using the 5965 dual column electromechanical machine equipped with pneumatic side action grips and rubber coated jaw faces.

Here is a set of simple soft jaws that allows to clamp parallel or wedged pieces, like a musical instrument neck for instance.

We recommend that the faces used for this testing allow for zero grip separation in order to accommodate for the small overall length of the contact lens specimen.

For this test, we used the 5569 electromechanical test frame, with a 50 kN load cell and 30 kN capacity mechanical wedge action grips with coarse serrated faces.