This Magnifying Comparator has many reticles options. You can use it just as you do any other scale - put it down on the work and measure. When things are small you have to magnify both them and the measuring scale in some way, and this is the most convenient and least expensive way to do it. An optical tool designed to take advantage of modern manufacturing methods to get accuracy, roughness, portability and versatility at an extremely low price.
11947 - Comparator with 6x magnifier, case and one pair of No. 121 Reticles (no substitutes)
11977 - Comparator with 6x magnifier, case and four pair of No. 121, 122, 123, 124 Reticles (no substitutes)