Overview Reviews Product Description 640 136C VISCOMETER AC ADAPTER 120V (INCLUDED STANDARD) Product Videos Custom Field Product Reviews Write a Review Write a Review × 640 TB136C VISCOMETER AC ADAPTER 120V (INCLUDED STANDARD) Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *