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Page 698 of 698
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Maker
Baird & Tatlock (London) Ltd.
Title
Electrolytic Analysis Apparatus
Description
Catalogue of electrolytic analysis apparatus and accessories, with photographs, specifications and prices.
Main units are: ‘Industrial’ model for stationary electrodes, with single units or multiple unit outfits; ‘Unity’ mode with rotating electrodes (master unit: up to six single test slave units can be added to form multiple units).
Accessories are: low-tension supply outfits - transformers for D. C. mains supply (rectifiers); beakers; clock glasses; platinum electrodes.
Advertisement on back page for other Baird & Tatlock products (prices not supplied): thermostat ovens, analytical precision balances, aperiodic projection balances, ‘Empire’ balances, weights.
Shelfmark
Maker
Service Trading Co.
Title
Wimshurst Electrostatic Generator
Description
One-page advertisement for electrostatic generator, with illustration and price.
‘Really well constructed machine. Ideal for School and Laboratory to demonstrate the various effects associated with static energy. Will work well in any atmospheric condition giving a spark over 3in. long in dry weather. 11in dia twin plates. 2 Leyden jars. Discharge electrodes. Heavily plated fittings, mounted on solid wooden base. Outstanding value at £13/17/6. Carriage UK (B.R.S.) 10/-.
Shelfmark
Maker
Optical Works Ltd.
Title
Optical instruments and accessories
Description
Catalogue of optical instruments.
- Cover: photograph of a Schlieren mirror
- Catalogue of optical instruments, with specifications but no illustrations or prices. Includes 6-inch and 7-inch Schmidt cameras designed for stellar photography; collineator and compound reflector; Schlieren mirrors for use in wind tunnels and other fields where air disturbance is important; proof planes from crystalline quartz, fused quartz, Pyrex glass and plate glass; crystalline quartz prisms, plane parallel plates and condenser lenses; fused quartz (available for cutting, grinding and polishing); fused quartz windows; plano-convex and bi-convex lenses; negative lenses; quartz condenser lenses; glass prisms; six-inch and 8-inch F6 telescope; galvanometer mirrors.
- Price list inside back cover dated April 1949.
Shelfmark
Maker
Carl Zeiss
Title
Heating stages for microscopes
Description
- Description of two heating stages that have been developed as an accessory to the standard microscope: one model for temperatures of 30-60 degrees Celsius and another, simpler model for temperatures of 35-43 degrees Celsius. The heating stages are equipped with thermometers - on the 30-60 degree model this is attached to a thermoregulator, and on the 35-43 degree model the temperature is regulated by hand by means of the built-in regulating resistance of the heating device.
- Photograph of the heating stage attached to a microscope.
- Order list for the heating stages and accessories for both stages, with catalogue numbers and approximate weight. No prices.
- Details of how to contact Zeiss branches, and advertisement for other instruments in their delivery programme.
Shelfmark
Maker
Griffin & George Limited
Title
Instruction Sheet: Making models of chemical structures using Griffin ‘Grifzote’ spheres
Description
Description of polystyrene spheres used to make models of chemical structures.
- General description of the spheres.
- Description of 2 types of model: tangential contact models for modelling atoms and molecules of elements and compounds (both organic and inorganic), and space-filling models to indicate how electron clouds overlap in space.
- Practical details of model construction.
- Photographs of the models depicting various molecules.
- Geometric diagram of the tangential contact and space-filling molecules as illustrated by the water molecule H20.
- Geometric diagrams of marking spheres at the most common angles and of marking out tetrahedrally with protractor.
- Paper patten details for space filling model of the formaldehyde molecule CH20, and for a benzene ring.
- Tables of covalent, ionic and Van der Waal’s radii; of some common structures; and of the Institute of Physics colour code for the models
- References and useful reference books
- Addenda: techniques for connecting the spheres together and for marking out speheres using dividers instead of a protractor.
Shelfmark
Maker
unknown
Title
Instructions for Scientist X20 microscope
Description
Instruction sheet describing how to set up and use the Scientist X20 microscope, with diagrams.
Further instructions for using the bridge to support a glass microscope slide, and for using a cut-out plastic slide when glass slides are not available.
Shelfmark
Maker
Cambridge Instrument Company; Limited
Title
Abridged Specifications for Cambridge Electrical Instruments
Description
Pictures and short descriptions of the technical specifications of instruments.
Shelfmark
Maker
Cambridge Instrument Company; Limited
Title
Cambridge CO2 & CO Indicators & Recorders
Description
Pictures and short descriptions of the technical specifications of instruments.
Shelfmark
Maker
Cambridge Instrument Company Limited
Title
Cambridge Electro-Chemical Dissolved Oxygen Recorder. Gas-phase transfer type
Description
Pictures and short descriptions of the technical specifications of instruments.
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