Crystal Replacement Fit Dimension Calculator
Screen replacement-crystal diameter and thickness against caller-supplied case-opening, seat-depth, and maximum-thickness dimensions.
Description
Replacement-crystal dimensional screening compares diameter and thickness with a supplied opening and seat.
Replacement-crystal dimensional screening compares diameter and thickness with a supplied opening and seat. All three clearance conditions must pass.1
Screen replacement-crystal diameter and thickness against caller-supplied case-opening, seat-depth, and maximum-thickness dimensions.
When to use Crystal Replacement Fit Dimension Calculator
Use this tool to screen replacement-crystal diameter and thickness against caller-supplied case-opening, seat-depth, and maximum-thickness dimensions.
Choose a supported reference focus or prepare the watch measurements, evidence and explicit limits requested. Confirm units and date conventions before running.
How to use Crystal Replacement Fit Dimension Calculator and understand its results
- Choose a supported reference focus or prepare the watch measurements, evidence and explicit limits requested. Confirm units and date conventions before running.
- Enter availableCrystalDepthMillimeters, caseOpeningDiameterMillimeters, crystalDiameterMillimeters, crystalThicknessMillimeters, maximumThicknessMillimeters using the field table and calculation rules, then run the tool.
- Read depthClearanceMillimeters, diameterShoulderClearanceMillimeters, fitsCallerDimensions. The explanation below defines the units, signs, ordering and any flags or placeholder values.
- If the tool reports an input issue, correct the values and run it again. Apply the stated assumptions when interpreting a successfully returned result.
| Input field | Meaning | Value type; see rules below | Requirement |
|---|---|---|---|
| availableCrystalDepthMillimeters | Available crystal-seat depth (mm) | number; minimum: 0 | Required |
| caseOpeningDiameterMillimeters | Case-opening diameter (mm) | number; minimum: 0 | Required |
| crystalDiameterMillimeters | Replacement crystal diameter (mm) | number; minimum: 0 | Required |
| crystalThicknessMillimeters | Replacement crystal thickness (mm) | number; minimum: 0 | Required |
| maximumThicknessMillimeters | Caller-specified maximum thickness (mm) | number; minimum: 0 | Required |
Enter positive mm dimensions and maximum thickness. Return both signed clearances and inclusive conjunction of diameter clearance≥0, depth clearance≥0 and thickness≤maximum.
diameterClearance=opening−crystalDiameter; depthClearance=depth−thickness Units, indexing, boundary conditions and exceptional cases are defined in the calculation rules above.
| Output field | Meaning | Value type |
|---|---|---|
| depthClearanceMillimeters | Depth clearance (mm) | number |
| diameterShoulderClearanceMillimeters | Diameter shoulder clearance (mm) | number |
| fitsCallerDimensions | Fits caller dimensions | boolean |
{
"input": {
"availableCrystalDepthMillimeters": 2,
"caseOpeningDiameterMillimeters": 30,
"crystalDiameterMillimeters": 29.8,
"crystalThicknessMillimeters": 1.5,
"maximumThicknessMillimeters": 1.8
},
"output": {
"depthClearanceMillimeters": 0.5,
"diameterShoulderClearanceMillimeters": 0.1999999999999993,
"fitsCallerDimensions": true
}
}Limitations and assumptions
No gasket compression, interference fit, geometry, pressure rating or actual installation is evaluated.
Numeric inputs, where present, must be finite. Follow the calculation-specific rules for overflow, underflow and exceptional cases. Missing required fields, extra fields, wrong value types and violations of the calculation rules are input errors. A successfully returned false flag is an evaluated outcome; its meaning is explained above.
Alternative or Complementary methods
Use Mainspring Barrel Envelope Screen: Screen a caller-supplied mainspring radial envelope and height against barrel, arbor, and clearance dimensions without deriving the envelope from spring length, thickness, or strength. For a complementary task, use Case Refinishing Removal Budget Calculator: Allocate a caller-defined case-thickness removal budget across polishing passes without claiming a guaranteed microns-removed rate.
References
Similar or alternative tools
- Mainspring Barrel Envelope Screen
Screen a caller-supplied mainspring radial envelope and height against barrel, arbor, and clearance dimensions without deriving the envelope from spring length, thickness, or strength.
- Case Refinishing Removal Budget Calculator
Allocate a caller-defined case-thickness removal budget across polishing passes without claiming a guaranteed microns-removed rate.