For determining the concentration of oil in water emulsions and transparent solutions, such as machine shop coolant. Maintaining the correct mixture in coolant systems is vital to ensure optimum performance from cutting tools. To protect the machine and workpiece from corrosion and to reduce the risk of health hazards arising from incorrect concentrations of water soluble oils. To economise the use of water base cutting fluids and grinding fluids.

Specifications:
Range ND: 1.333 - 1.356. Bx: 0 - 15%.
Eyepiece magnification: 11x.
Telescopic lens magnification: 4x.
Accuracy: ±0.0003 ±0.2%
Lattic value: 0.0005 0.2%
Supplied in fitted plastic case complete with calibration screwdriver and operator manual.