Detailed Description:
This is an Advanced Petroleum Tank Calculator
This is a professional-grade calculator designed specifically for the petroleum industry to provide precise tank stock readings and density corrections according to international standards.

Key Features:
Tank Stock Calculator

Horizontal cylindrical tank volume calculations with pinpoint accuracy
Built-in tank size presets: 15KL, 20KL, and 40KL with industry-standard dimensions
Custom tank size option for specialized equipment
Mathematically precise horizontal cylinder segment volume calculations
Automatic overflow detection for measurements exceeding tank diameter
Real-time calculation and clear result visualization
ASTM D1250 Density Correction

Implements industry-standard ASTM Table 53B for petroleum measurement
Accurately converts observed density to reference density at 15°C
Supports density input in both kg/m³ and g/cm³
Precise interpolation between table values for any temperature/density combination
Works with petroleum products across the entire range of the ASTM tables
Professional User Experience

Clean, modern interface with color-coded sections
Adaptive dark/light theme toggle for all working environments
Responsive design works on all mobile devices and tablets
Clear visualization of results with proper unit display
Input validation with helpful error messages
No internet connection required - works completely offline
Technical Excellence

Implements ASTM D1250/API MPMS 11.1 standards for calculations
Uses precise geometric formulas for horizontal cylindrical tanks
Employs bilinear interpolation for accurate table lookups
Handles edge cases and boundary conditions properly
Professional-grade accuracy suitable for commercial applications
Perfect For:
Petroleum engineers and technicians
Terminal and depot operators
Storage facility managers
Quality control inspectors
Tank calibration specialists
Independent petroleum surveyors
Anyone working with petroleum measurements
This app combines industry-standard calculation methods with a modern, user-friendly interface to deliver accurate results for petroleum tank stock and density correction. Whether you're in the field taking measurements or in the office verifying calculations, this application provides reliable results that conform to international petroleum measurement standards.

Streamline your petroleum measurements today with it - the professional's choice for tank calculations.