Engineering tools
Calculations run in the browser without a network: after the page loads no internet connection is required. Formulas, limits and examples are on every tool page.
Sight glass fitting class selectorMulti-step input, explainable classes, list of clarifications, hand-off to the RFQ sheet.Vendor RFQ sheetFull specification editor: copy, .txt download and print. No server submission.View areaA = π(d/2)² from the free diameter; outputs mm² and cm² and compares two windows.Approximate disc massm = ρ·π(d/2000)²·(t/1000): idealized solid cylinder, density is your input.Pressure converterbar, kPa, MPa, Pa, psi, atm via a single Pa base. Not a gauge↔absolute conversion.Temperature converter°C, °F, K with the correct absolute-scale offset. A temperature is not a permitted glass limit.PCD hole spacingChord between adjacent holes: s = D·sin(π/n) for D > 0 and integer n ≥ 3. No tolerances or strength claims.
The tools never send your inputs to a server or to analytics.