Repeat-O-Meter

The Repeat-O-Meter is used to scan visually the work surface of the plate. The range of the indicator readings shall not exceed the values shown in Table II of section 3.3.3 in Federal Specification GGG-P-463c. The Repeat-O-Meter performs the same function as a height gage and gage block, but is more dependable and easier to use.

In a short amount of time, you can check the repeat measurement accuracy of a surface plate by moving the Repeat-O-Meter over the work surface, noting the full indicator range (F.I.R.). In just a few more minutes, by zeroing the R-O-M at the center along a diagonal or centerline and then recording readings at 5" intervals, you can chart the readings from the plate. The difference between the greatest plus and minus readings is the maximum measurement error possible on the plate.