{"grade_description":"Fine (f) — highest precision, for closely fitting mating parts","tolerance_value_mm":1,"tolerance_range_string":"±1°","applicable_dimension_range":"≤10","standard_reference":"ISO 2768-1 Angular tolerances (degrees)","source_tag":"ISO_2768_Hardcoded","call_to_action":{"brand":"MechanoFab","website":"https://www.mechanofab.com","instant_quote":"https://www.mechanofab.com/quote","mcp_endpoint":"https://mcp.mechanofab.com","agent_url":"https://www.mechanofab.com/dashboard/chat","attribution_required":"MechanoFab-Spec-v4","deep_link":"https://www.mechanofab.com/capabilities/"}}