$80.00
- Availability:
- In Stock
- Product Code:
- G-60
Available Options

Individually Serialized, Calibrated & Certified Microfinish Comparators come with a Certificate of Calibration.
Measuring Conditions are listed with their corresponding values.
The calibrating system was calibrated to Standard Reference Material traceable to the National Institute of Standards and Technology. Calibrations are performed by Holts Precision inc.
Description
The G-60 Conventional Machining MICROFINISH COMPARATOR is rectangular in shape (1 3/8" x 6") and is a corrosion resistant electroformed nickel duplicate of actual machined surfaces.
There are twelve replicated machined surface finish specimens with examples of five different machining processes: lapped, ground, profiled, shape-turned and milled- ranging from 4 to 125 microinches.
The G-60 MICROFINISH COMPARATOR is supplied in a leatherette case with engineering data and instructions.
The G-60 is also available in metric with micrometer designations.
TYPE:
The specimens are electroformed replicas of original edm'ed surfaces.
MATERIAL:
This MICROFINISH COMPARATOR Surface Roughness Scale is made of nickel. It will not corrode.
APPEARANCE:
Each specimen has the surface roughness characteristics of a turned metallic material.
SURFACE ROUGHNESS:
Means the finely spaced surface irregularities produced by the cutting action of the tool edges, the feed of the machine tool and by abrasive grains.
UNIFORMITY AND ACCURACY:
The original masters and the electroformed replica production masters have been checked at evenly distributed intervals. Sufficient measurements were taken to determine a representative average. The rating listed is the average of these readings.
LAY:
This is the term to designate the direction of predominant surface irregularities.
FLAWS:
These are the irregularities which may appear at frequent intervals. They are not typical of a turned surface.