This is the Taylor 9193 CYA View Tube.  Marked in gradations of 20-100ppm.

 For faster, more accurate measurements, this product will prepare a 10 or 25 ml sample for testing with ease. The sample sizer will displace exactly the right amount of water to leave the correct volume for the test. Must be used with the Taylor sample tube.

 Taylor brand 25 ml graduated sample tube for testing.