strain gauges and rosettes

Choosing strain gauges and rosettes often comes down to matching the sensor\u2019s characteristics with the installation environment and measurement goal. Kingmach produces foil strain gauges on polyimide or glass-fiber-reinforced backing, covering common resistance values like 120 \u03a9 and 350 \u03a9, with grid lengths from roughly 1 mm to over 20 mm. For biaxial stress states or unknown principal directions, rosettes with two or three grids in tee, rectangular, or delta configurations provide the necessary data to resolve full-plane stress or strain tensors. We stock a wide range of standard patterns, but a significant part of our work involves customization. If your test requires a particular gauge factor tolerance, non-standard lead wire attachment, or a substrate that stands up to concrete embedment, our engineering team can adjust the production run accordingly. Applications we commonly support include structural health monitoring on bridges and tunnels, load cells for geotechnical instrumentation, residual stress analysis in metal frames, and fatigue testing on rotating machinery. Installation is straightforward for experienced technicians: surface preparation, adhesive selection, and protective coating steps are well documented and we provide application notes. When a project\u2019s timeline is tight, our manufacturing flexibility helps keep things moving. Beyond the sensor itself, our technical support extends to wiring configurations, temperature compensation methods, and troubleshooting noise in strain circuits. Because we manufacture in-house, quality checks happen at every stage, from grid etching to final resistance verification.