Tolerance Master vs 太空日程

Tolerance Master is a limits-and-fits workspace for mechanical design, machining, inspection, and education. Based on the ISO 286 and GB/T 1800 tolerance systems, it connects direct lookup, inverse fit selection, visual checking, and saved results in one focused workflow. LIMITS & FITS • Basic sizes greater than 0 and up to 3150 mm • Common hole zones A–ZC and shaft zones a–zc • Valid tolerance grades filtered dynamically by size and tabulated availability • Upper and lower deviations plus maximum and minimum limit sizes • Minimum and maximum clearance with clearance, transition, or interference classification • Switch results between micrometres and millimetres SOLVE FROM THE TARGET • Enter the clearance or interference range you need • Rank standard H-basis combinations deterministically • Compare candidates and return one to the main calculator for verification • Start quickly from preferred fit combinations VISUAL AND TRACEABLE • See the zero line, hole and shaft tolerance zones, and clearance range together • Save up to 100 calculations locally and restore them in one tap • Share a structured text summary of inputs, deviations, limits, and fit type • Move between Calculator, Fit Guide, and History workspaces Standards data and calculations run on device. Engineering inputs and saved history are not uploaded. This app is an engineering aid and does not reproduce the standards. Before critical design or production release, verify the applicable standard edition, drawing requirements, material, process, and inspection method. This app includes a 3-day local trial. Continued Pro access requires a separate monthly subscription purchase. A purchased subscription renews automatically unless cancelled in your Apple account settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Space View keeps you on top of every moment of spaceflight, worldwide. From SpaceX Falcon 9 and Starlink missions to rockets and launches from agencies around the globe, Space View brings you real-time schedules, precise countdowns and live launch timelines, together with rich data on rockets, spacecraft and launch sites. KEY FEATURES • Global launch schedule: browse upcoming and past launches; filter by country and launch provider. • Live countdown: a digital-style countdown down to the second, with an animated Launch Timeline that lights up as the mission progresses. • Launch details: rocket configuration, reusable boosters, spacecraft, satellite launch-site maps, mission & orbit info, agencies and statistics. • Vehicle library: rockets, reusable cores and spacecraft, with model details and flight history. • Rocket gallery: browse photos from previous launches of the same rocket. • Daily space photo: a hand-picked space image every day. • Launch reminders: never miss a launch you care about. • Thoughtful experience: Simplified Chinese / Traditional Chinese / English, dark mode, and multiple time zones (local / launch site / UTC). MEMBERSHIP A membership unlocks more historical launch records and advanced features. It is an auto-renewing subscription billed through your Apple Account; manage or cancel anytime in Settings — Apple ID — Subscriptions. It renews automatically unless canceled at least 24 hours before the period ends. Bring the cosmos within reach — start tracking the next launch today. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/