No Image Lot 356 Lot of 2 Portable Refractometer-Industrial Fluid Tester Range 0-32%, Grad. 0.2% See photo. 356Lot of 2 Portable Refractometer-Industrial Fluid Tester Range 0-32%, Grad. 0.2% See photo. Harris Auctions Lot of 2 Portable Refractometer-Industrial Fluid Tester Range 0-32%, Grad. 0.2% See photo. Add to watchlist Live