Tape Measure Calculator Pro vs TechRef

**Featured in Crate and Barrel's Home Catalog** Ever need to do math while using a tape measure? What is 25 3/8" ÷ 3, BUT on a measuring tape? Skip the math, converting to fractions, and go right to the answer on the tape!! Saves you time and costly mistakes on material! * Quick measurement calculations, right on a visual tape measure!! No need to guess where to place your mark!! * Ability to add, subtract, multiply, divide multiple measurements. Mix decimals and fractions too! * Results are given back to you in inches, feet, and centimeters, in both decimal and fractions...no more conversion after the fact! * In a pinch without your tape measure? Tapeulator comes with a measuring feature that will help you get a measurement in a bind * Great for wood work, metal work calculations! Pipe cutters love our App! Tapeulator is perfect for do it yourselfers and the pros. Don't just take our word for it, check out some recent reviews from others: - "My business is home remodeling, I use this app at least a couple of times a day. Makes the math a lot simpler, saves time. Thanks for a great product." - App Store Review, USA - "Tapeulator = Awesome! - You don't realize how much time you can save and how much frustration you can avoid by using this app." - App Store Review, USA - "This little gem saved me a decent amount of money by making it easy to double check my work before cutting. Highly recommended. Measure twice, cut once!" - App Store Review, Canada - "Excellent app!!!!! Makes us average guys a real pro!!! Eliminates tape measure guess work...I recommend it for everyone!!!" - App Store Review, USA

The drawing says 50.000 +0.200 / -0.000. The machine needs 50.100. TechRef does that math, converts it into every unit, and records what you measure. Built for the everyday questions on the shop floor. WHY THE CENTER VALUE MATTERS The center of an asymmetric tolerance is not the nominal size. TechRef calculates the true center and the full band, so you get it right in one setup. Input: 50.000 +0.200 / -0.000 Center: 50.100 Range: 50.000 – 50.200 mm 50.1000 (50.0000 – 50.2000) in 1.9724 ( 1.9686 – 1.9763) TOLERANCES FROM THE STANDARD (TechRef Pro) Pick an ISO 2768 class (f, m, c, v) or an ISO 286 fit (hole H7, shafts g6 to p6), and TechRef looks up the deviations for your size. Pick a shaft to see how it fits an H7 hole: clearance, transition or interference. Use ISO, JIS, EN, DIN or BS names; only standards officially identical to ISO are listed. TABLES AND CALCULATORS • Tolerance tables (TechRef Pro): ISO 2768 and ISO 286 (H7, g6 to p6, fits with H7), up to 500 mm • Tap drill charts (TechRef Pro): Metric, Unified and Whitworth, with minor diameter limits. Sizes that could not be verified are left out • Drill size charts: number, letter and fractional drills in inches and mm • Cutting speed and feed: spindle speed, cutting speed and feed rate, in mm and m/min or inch and SFM. Formulas only RECORD WHAT YOU MEASURE Add measured values to any point in a sheet. Each entry updates the count, mean, max, min, range, standard deviation, deviation from target, out-of-tolerance count, Cp and Cpk. Drawing: 25.000 ±0.100 Measured: 25.02 / 25.05 / 24.98 / 25.12 / 25.03 Mean: 25.040 (+0.040 from target) Out of tolerance: 1 / 5 The target is the tolerance center, so you see which way to adjust. Drawing in mm, measuring in inches? Record in your own unit. Free, and not counted toward the save limit. INSPECTION SHEETS AND CSV Create a sheet per part with points, each with its own dimension and tolerance. Export CSV per point or per measured value. 13 CATEGORIES, 100+ UNITS Length, pressure, torque, force, temperature and more. Show only the units you use, from mm and inch to bar, psi, kgf/cm², N·m and lbf·ft. Factors come from exact definitions, never rounded approximations. SAFE-SIDE ROUNDING Bands are rounded inward, so a part inside the band on screen is inside it for real. 10 LANGUAGES English, Japanese, German, French, Italian, Spanish, Portuguese, Korean, Simplified Chinese and Traditional Chinese. Follows your device, or choose in Settings. FREE, AND TechRef Pro Conversions, manual tolerances, drill charts, the cutting calculator, Sheets, measured values and CSV export are free. Saving dimensions has a limited number of free saves, then once per hour. TechRef Pro, a one-time purchase, removes the limit and unlocks tap drill charts, tolerance tables and tolerances from the standard. No subscription. EVERYTHING STAYS ON YOUR DEVICE No server, fully offline. No ads, no tracking, no analytics, no account. ALSO History with search, labels and memos · 1 to 6 decimal places · How to Use · Dynamic Type · Light and dark · iPhone and iPad