API GRAVITY CALCUALTOR l Corrects API Hydrometer Readings at any temperature ( F) to API degrees at 60 F. l Corrects Relative Density Hydrometer Readings at any temperature ( F) to Relative Density at 60 l Converts API Gravity to Relative Density* l Converts API Gravity to metric density Kg/cubic meter l Converts API Gravity to weight in lbs per gallon 15 DENSITY CALCULATOR l Converts density reading taken with a hydrometer to corrected density at 15 c l Separate Scales for 3 different types of fuel: KEROSENE WIDE CUT AVGAS Jet A JP4 Jet A-1 Jet B JP 5 JP 8 l Scales read in KG/m  *Relative Density is now the accepted term for "specific gravity". INSTRUCTIONS for API CALCULATOR - GTP-3012-1: 1. Rotate disk unitl the observed hydrometer reading (API) is aligned with observed temperature, *F. 2. Read corrected Degrees API at the 60 *F arrow. NOTE: If a relative density or specific gravity hydrometer is used, set the hydrometer reading opposite the observed temperature. Then read corrected relative density at the 60 F arrow.