Fearn's Colliery Ventilation Officer's Calculator
Mear's Converion Calculator
Fearn's International Unit Converions Calculator
Mear's Combustion Efficiency Calculator
Fearn's Conveyor Belt Calculator
Fearn's Conveyor Belt Calculator, Metric Version
Fearn's Cyclone Soundrater for Centrifugal Fans
Mear's Domestic Central Heating Calculator Imperial
Mear's Domestic Central Heating Calculator Imperial for Houses and Bungalows, Model N0.8.
Mear's Industrial Central Heating Calculator, Model No.3.
Fearn's Mear Heating Engineer's Calculator
Mear's Ducting Calculator Imperial
Mear's Electric Lighting Calculator
Fearns, Mear and Company, Fawcett Extrusion Calculator
Mear's Gas Flow Calculator Metric Model GPMS
Mear's Gas Flow Calculator Imperial Model G4
Fearn's Gear Rating Computer
Mear's Glare Index Calculator
Mear's Helical Spring Calculator
Fearns Inches to Millimetres Conversion Calculator
Mears Inches to Millimetres Conversion Calculator
Fearn's Inertia Calulator for Rotating Masses Metric
Fearn and Mear's Machining Time Calculator for Lathework
Mear's Pipe Flow Calculator for Liquids and Gases (Turbulent Flow) Model No.3
Fearns Evershed Powerotor Power Calculator.
Fearn's Presswork Calculator, Model P.42.
Fearn's Production Engineer's Calculator, Metric Model P.30.M. For Machine H.P., Batch and Production Times, Speeds, Feeds and Cutting Times
Mear's Psychrometric Calculator for Air Coditioning and Meteorology
Fearn's Re-Order Point Calculator, Model A61
Fearn's Shaft Size and Horsepower Calculator
Fearn's Slide Rule
Fearn's Open University Slide Rule for course TM281.
Mear's Steam Flow Calculator for Flow at Pressure or Vacuum.
Fearn's Tank Capacity Calculator
Fearn's Typographer's Calculator
Mear's Valve Sizing Calculator for Hydraulic Pressing Operations
Fearn's Vee-Belt Horsepower Calculator
Mear's Warm Air Heating Calculator for Domestic Installations
Mear's Weight Calculator for Rolled Steel Sections (Imperial)
Mear's Weight Calculator for Rolled Steel Sections (Metric)
Mear's Weight Calculator for Rolled Steel Sections (Imperial) Made for the Consett Iron Company Limited
Fearn's Weight Calculator for Plates and Sheets
Mear's Weight Conversion Calculator, Avoirdupois to Metric
