Anthropometric Eye Height Seated Monitor Fit Checker
Measured seated eye/monitor geometry and explicit downward-angle reserve; upward views signed, not optimum universal fit. Caller independently establishes matching units, evidence, method edition and applicability; output is not compliance, diagnosis, work-safety approval, geological identity or validated hazard prediction.
Description
Eye and monitor-center heights determine a signed vertical viewing angle.
Eye and monitor-center heights determine a signed vertical viewing angle.1
A downward-angle allowance does not by itself assess a monitor placed above eye height or overall visual comfort. Use this tool to calculate anthropometric Eye Height Seated Monitor Fit Checker from the supplied measurements and assumptions.
When to use Anthropometric Eye Height Seated Monitor Fit Checker
Use this tool to calculate anthropometric Eye Height Seated Monitor Fit Checker from the supplied measurements and assumptions. Establish the observation protocol, units, task and reference population or review criterion before entering measurements.
How to use Anthropometric Eye Height Seated Monitor Fit Checker and understand its results
- Establish the observation protocol, units, task and reference population or review criterion before entering measurements.
- Enter observedSeatedEyeFloorCm, observedMonitorCenterFloorCm, observedHorizontalViewingCm, callerDownwardAngleMaxDegrees, using the field meanings and rules below, then run the tool.
- Read observedDownwardViewingDegrees, signedAngleReserveDegrees. Interpret the fields using their units, signs and evidence conventions below.
- If input validation fails, correct the reported field and run again. Before applying the result, check reference scope, model assumptions and any missing evidence or placeholder values.
| Input field | Meaning | Value type | Requirement |
|---|---|---|---|
| observedSeatedEyeFloorCm | Observed seated eye floor cm | number | Required |
| observedMonitorCenterFloorCm | Observed monitor center floor cm | number | Required |
| observedHorizontalViewingCm | Observed horizontal viewing cm | number | Required |
| callerDownwardAngleMaxDegrees | Caller downward angle max degrees | number | Required |
Enter positive eye and monitor-center floor heights and horizontal distance, with maximum downward angle in [0,90) degrees. Compute atan2(eye−monitor,horizontal) in degrees and subtract it from the chosen maximum. A monitor above the eye gives a negative angle and is not separately rejected or screened by a lower angle bound.
angleDeg=atan2(eyeHeight−monitorHeight,horizontalDistance)×180/π; reserve=maxDownAngle−angle Use the exact units, boundary rules, ordering and missing-evidence conventions above.
| Output field | Meaning | Value type |
|---|---|---|
| observedDownwardViewingDegrees | Observed Downward Viewing Degrees; follow the units, sign, ordering and evidence convention stated above | number |
| signedAngleReserveDegrees | Signed Angle Reserve Degrees; follow the units, sign, ordering and evidence convention stated above | number |
{
"input": {
"observedSeatedEyeFloorCm": 120,
"observedMonitorCenterFloorCm": 100,
"observedHorizontalViewingCm": 60,
"callerDownwardAngleMaxDegrees": 30
},
"output": {
"observedDownwardViewingDegrees": 18.43494882292201,
"signedAngleReserveDegrees": 11.56505117707799
}
}Limitations and assumptions
A downward-angle allowance does not by itself assess a monitor placed above eye height or overall visual comfort. Interpretation depends on the units, sampling scope and exact model described above.
All listed fields require explicit values. Unexpected fields, incorrect types, nonfinite numbers and sparse evidence arrays fail validation; the specific bounds and alignment requirements are stated above. Extremely large inputs or outputs can also be rejected. An input error is distinct from a successful result reporting false, no matches or missing evidence.
Alternative or Complementary methods
Use Monitor Viewing Distance Arm-Length Rule Checker for this related task: Monitor distance can be normalized by a measured arm length.
Use Contrast Ratio Paper-Screen Reading Comfort Checker when its separate inputs and assumptions fit the question: Paper-to-screen luminance can be compared through a signed natural-log ratio.
References
Similar or alternative tools
- Monitor Viewing Distance Arm-Length Rule Checker
Monitor distance can be normalized by a measured arm length.
- Contrast Ratio Paper-Screen Reading Comfort Checker
Paper-to-screen luminance can be compared through a signed natural-log ratio.