- Joined
- Dec 8, 2014
- Messages
- 84
I picked up a Fowler 52-646-400 bore gage to help check clearance on an engine I'm building.
Specs
.0005 Graduations
.0009 Total Error
.0004 Repeatability
.00025 Self Centering Error
I should probably have gotten the .0001 resolution since I'm trying to measure .0004 taper and out of round specs as well as bearing clearances at .0025.
I am having alot of variability between reading on different days .0005 on a bearing clearance reading between yesterday and today. The block was approximately the same temp.
I assume that is due to the error specs on the gage? Does anyone have a clear definition to the above specs or what I should look into for a replacement .0001 resolution gage
For comparison I looked up a Shars gage for a possible replacement.
303-3117
Product description
Specs
.0005 Graduations
.0009 Total Error
.0004 Repeatability
.00025 Self Centering Error
I should probably have gotten the .0001 resolution since I'm trying to measure .0004 taper and out of round specs as well as bearing clearances at .0025.
I am having alot of variability between reading on different days .0005 on a bearing clearance reading between yesterday and today. The block was approximately the same temp.
I assume that is due to the error specs on the gage? Does anyone have a clear definition to the above specs or what I should look into for a replacement .0001 resolution gage
For comparison I looked up a Shars gage for a possible replacement.
303-3117
Product description
- Measuring Range:0-1"
- Graduations: 0.0001"
- Accuracy (1st 2.5 Rev): +/- 0.0001"
- Accuracy (Overall): +/- 0.0004"