Shelfmark

bec.23

Maker

Ealing Beck Ltd.

Title

Beck Diamax and Epimax Microscopes: Instruction Manual

Description

Instruction manual, divided into the following sections:
- Introduction
- Diagram of the microscope
- Bodytubes
- Objectives and oculars
- Stages and substages
- Condensers and illuminators
- Phase contrast
- Dark field illumination
- Epimax microscope
- Care of the microscope
- Projection base and head

Shelfmark

btl.37

Maker

Baird and Tatlock (London) Ltd.

Title

The B.T.L. “Bara” Flask Heater

Description

Description of flask heater, illustration, specification, catalogue numbers and prices.

Shelfmark

csi.864

Maker

Cambridge Instrument Company; Limited

Title

Cambridge universal bridge

Description

The instrument aims to provide accurate measurement of resistance, inductance and capacitance over a wide range of values. Its suitability in several workplace contexts is outlined, then a detailed description in paragraph form follows, covering these topics:-
Choice of power supply;
Measuring elements;
Accuracy of measurement;
The D.C. bridge;
Power units;
Accuracy;
Flexibility;
Specifications;
Dimensions;
Cat. Nos.

Shelfmark

Mar.4

Maker

Patent Office; Marconi Instruments Limited

Title

Improvements in or relating to wheatstone bridge resistance measuring circuits

Description

Provisional Specification, followed by Complete Specification, of Marconi Instruments Limited for their invention relating to improvements in wheatstone bridge resistance measuring circuits, and particularly to bridge circuits of the kind in which at least one arm of the bridge includes the anode-cathode space of a thermionic valve. Diagram included at back of document.

Shelfmark

fdc.1

Maker

Furniture Development Council

Title

Moisture meters for timber

Description

This report of the Furniture Development Council describes the correct use of moisture meters in general, then the broad groups into which moisture meters may be placed. There follows a survey of sixteen different moisture meters, with their individual characteristics and data, and comparisons are made.
Information is presented under these headings:- Introduction; Part I: Moisture meters: how they work and what they do:
Moisture Measurement in General;
Resistance-type Moisture Meters
Capacity-type Meters
The Accuracy of Electrical Moisture Meters
Humidity-type Moisture Meters
Continuous-reading Moisture Meters
Correction Tables and Graphs;

Part II Comments on Individual Moisture Meters
Method of Description
Resistance-type Moisture Meters
Radio-frequency Capacity-type Meters
Humidity-type Moisture meters
Continuous-reading Moisture Meters
Comparison and Reference Table

Shelfmark

aer.23

Maker

Agitelco AGI

Title

[Agifon 84 table top payphone Agifon 86 wall mounted payphone]

Description

This leaflet presents two of the company’s telephones. Half a page is devoted to a photograph, and a bulleted list of features, of each instrument.

Shelfmark

Mnr.6

Maker

Monroe; The Merkham Trading Company; Ltd.

Title

Table of decimal equivalent of the fractional parts of a gross, for use with the Monroe Calculating Machine

Description

Shelfmark

csi.866

Maker

Cambridge Instrument Co. Ltd.

Title

Cambridge Paschen galvanometer

Description

This moving magnet galvanometer aims to provide a very high order of sensitivity needed to detect and measure very small currents. A detailed description of its design and function is given, and includes specification according to Type No.
Details of a Standard Cambridge Lamp and Scale Outfit, together with specification, conclude the text.

Shelfmark

Edi.1

Maker

Edison Swan Electrical Co.; Ltd.

Title

Abridged Catalogue of Royal Ediswan Lamps [1st section] The Ediswan abridged catalogue of lighting accessories [2nd section]

Description

Shelfmark

csi.814

Maker

Cambridge Instrument Company Ltd

Title

Cambridge instruments for draught and pressure: Indicators, recorders, controllers

Description

Information is presented under these headings:-
Draught and Low Pressure Indicators;
Portable Indicators and Recorders;
Pressure and Vacuum Indicators;
Pressure Controllers;
Circular Chart Recorders;
Electrical Pressure Transmitting Outfit.

Each section gives ranges, dimensions, cataloge numbers and accessories where appropriate.