This is a free Ad-Supported version of the paid RC Calculators app.This is a collection of calculators that are convenient formodelers and R/C aircraft modelers in particular. The calculatorswere designed to be flexible in input configurations and to takeinput and output unit specifications in a wide range of choices.The free edition was created so that you can have the convenienceof these calculators even when you don't have access to a paymentaccount. This free edition does require internet access permission.The calculators and features in this release are: • Unit Converter• Wing Area • Wing Loading • G-Force • Pitch Speed • Engine Size •Tank Size • Gas / Oil Mix • Propeller Chart • Drill Size Charts •Battery Voltage

This is a very simple free app with charts for drill bits sizesinfractional inches, metric, US number, and US letter sizes.Itscales to larger screens on 7" and 10" tablets foreasyreadability. 12/1/2013 - Added a Tap Drills for U.S. Sizeschartwith drill sizes for 100%, 75%, and 50% threads as wellasclearance sizes. 6/12/2014 - Added a Tap Drills for MetricSizeschart with drill sizes for 75%, and 50% threads as wellasclearance sizes. Added a welcome screen to show newfeatures.6/22/2014 - Added a button to upgrade to Drill Bit ChartsPro whichis available for the minimum paid fee It includes a handyUnitConverter and will be getting new features like a newly addedWoodScrews chart. 10/21/2014 - Fixed a theme issue on some newdeviceswith previews of Lollipop. 1/10/2016 - Fixed font sizes onsomemid-size devices Drill Bit Charts Pro is an ongoing projectthatwill continue to get more enhancements and become available onmoreplatforms including iPhone and iPad. Drill Bit Charts Proiscurrently available on Android and Windows 10. Drill Bit Chartsisavailable on Windows 8.1 and Windows Phone 8.1 Features comingsoonto Drill Bit Charts Pro include: * Zooming of charts. * Settingthefont size used in the charts. * Color themes and control ofcolorsin charts. * Many more charts. * Copy to clipboard. * Closestdrillhelp. * Integration with wearables like Pebble, Pebble Time,andAndroid Wear. * A lot more.