Quick Answer: Lee's And Charlton's Apparatus is used for determining the relative conductivity of thin layers of materials. It has a cylindrical brass slab of 11 cm diameter and 10.5 mm thickness, with a 4.5 cm deep brass steam chest of the same diameter resting on it.
Last updated: October 2026
Key Features
Cylindrical brass slab, 11 cm diameter, 10.5 mm thick
Brass hollow cylinder steam chest, 4.5 cm deep, with steam inlet and outlet tubes
Thermometer hole drilled radially in each part
Slab hung by eyelets and three strings from a stout annular ring on a heavy retort stand
Also available with an iron cylindrical slab of the same size
Supplied without thermometer
Technical Specifications
Specification
Value
Slab
Cylindrical brass, 11 cm diameter, 10.5 mm thick
Steam chest
Brass hollow cylinder, 4.5 cm deep, same diameter as slab
Steam connections
Inlet and outlet tubes
Thermometer holes
Drilled radially in each
Suspension
Eyelets on slab, three strings, stout annular ring
Support
Heavy retort stand
Option
Iron cylindrical slab of the same size
Not included
Thermometer
About This Product
This Heat apparatus compares how well thin layers of material conduct. Steam passes through the brass chest that rests on the brass slab, thermometers go into the radial holes drilled in each, and the slab hangs by its eyelets and three strings from an annular ring held on a heavy retort stand.
Frequently Asked Questions
Q1. What is Lee's And Charlton's Apparatus used for? It is used for determining the relative conductivity of thin layers of materials.
Q2. What size is the brass slab? The cylindrical brass slab is 11 cm in diameter and 10.5 mm thick. The steam chest above it is 4.5 cm deep with the same diameter.
Q3. Is there an alternative to the brass slab? Yes. The apparatus is also available with an iron cylindrical slab of the same size.
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