Caliper
Considerations
- Pre-Operation Checklist is a prerequisite for ANY operation.
- Applies to Digital and Dial calipers (decimal, fractional, and metric) commonly found in the shop.
- Tools are in working condition; capable of being properly zeroed out and will hold calibration.
- Test examples are of appropriate size to be measured using the available tools.
Pre-Operation Checklist
Performance Standard –
Level 1
- Verifies caliber reads “0” when jaws are touching.
- Demonstrates understanding of all applicable controls and functions of the caliper(s) to be used for evaluation.
- Handles caliper with care and stores properly with jaws not touching each other.
Level 2
- Verifies calibration to a known standard.
- Meets Level 1 performance standard.
Measure Thickness
Level 1
Given material with known thickness dimensions, and a caliper calibrated and ready to measure, record the thickness.
Performance Standard –
- Accuracy of answer shall be ± 0.076 mm [0.003″].
Level 2
Given material with known thickness dimensions, and a caliper slightly out of adjustment (calibration), demonstrate ability to zero out the instrument, and record the thickness.
Performance Standard –
- Demonstrates ability to zero out/calibrate the caliper.
- Meets Level 1 performance standard.
Measure Depth
Level 1
Given material machined in any fashion to known depth dimensions, and a caliper calibrated and ready to measure, record the depth of each example.
Performance Standard –
- Accuracy of answer shall be ± 0.076 mm [0.003″].
Level 2
Given material machined in any fashion to known depth dimensions, and a caliper slightly out of adjustment (calibration), demonstrate ability to calibrate the instrument, then record the depth of each example.
Performance Standard –
- Demonstrates ability to zero out/calibrate the caliper.
- Meets Level 1 performance standard.
Measure Inside Dimension
Level 1
Given material with known inside dimension, and a caliper calibrated and ready to measure, determine the inside dimension.
Performance Standard –
- Accuracy of answer shall be ± 0.076 mm [0.003″].
Level 2
Given material with known inside dimension, and a caliper slightly out of adjustment (calibration), demonstrate ability to calibrate the instrument, then record the inside dimension.
Performance Standard –
- Demonstrates ability to zero out/calibrate the caliper.
- Meets Level 1 performance standard.
Measure Center Distance from Edge of Board
Level 1
Given material with known hole diameters, and a caliper calibrated and ready to measure, record the centerline distance from the hole to the edge of of each piece.
Performance Standard –
- Accuracy of answer shall be ± 0.076 mm [0.003″].
Level 2
Given material with known hole diameters, and a caliper slightly out of adjustment (calibration), record the centerline distance from the hole to the edge of of each piece.
Performance Standard –
- Demonstrates ability to zero out/calibrate the caliper.
- Meets Level 1 performance standard.