Ruler measures dimensions with a 1m scale without calibration. Level meter checks surface levels. Speed meter displays speed via GPS. Location shows current position and tracks movement. Compass provides directional orientation.
Access resources using a digital card to check out materials in person. Search for books, videos, and music by keyword or ISBN. Track checkouts, holds, fines, and renewals. Download eBooks, eAudiobooks, eMagazines, and eMusic.
Calculate BTU/h capacity and determine recommended equipment types. Convert between BTU, kW, Kcal, and Tons. Check current price estimates and compare inverter versus conventional energy consumption. Unlock advanced features through in- purchases.
