A test piece is fastened vertically between two clamps. The upper clamp folds, the test piece by means of the reciprocating circular motion while the lower clamp maintain it under a given load. For determining thefolding endurance of all kinds of paper, paperboard, foils and films with a standard folding speed per minute. Kohler Molin Type with Five Figure counter - Loading clamps of dead weight type, giving standard load of 800 gm, during the test. With Five-Figure impulse Counter having hold and zero setting.