Comparator 3000/ Petroleum AF650, Visual Grading

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Description

Compact, Visual Measurement System for Single Scale Measurements
Self-Contained, Includes Everything Needed to Measure the Scale
Easy-To-Use, Fast & Accurate
3-Field Viewing for Optimum Accuracy
A series of single scale, 3-field instruments for visually determining the colour of samples by direct comparison with coloured glass filters.