Categories

Choose a discipline. Categories marked “Coming soon” will open once their first calculators have been built and tested.

Mechanical Engineering

Torque, power, speed, gears and other machine fundamentals.

Lathe, threading, milling and drilling calculations for the workshop.

Limits and fits, tolerance stack-ups, measuring instruments and uncertainty.

OEE, takt time, capacity, inventory and quality metrics for production.

Ohm’s law, power, energy and circuit fundamentals.

Weight of plates, bars, pipes and sections in common materials.

Unit conversion, areas, volumes and shape dimensions.

Concrete, masonry, earthwork and construction quantity estimates.

Number systems, data storage, IP subnets, transfer time, screens and PC power.

Concentrations, dilution, mixtures and process calculations.

Heating and cooling loads, airflow and duct calculations.

Solar, battery and energy-use calculations.

Percentages, ratios, statistics and everyday maths for engineers.