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Shelfmark
Maker
Cambridge Instrument Company
Title
Cambridge Cotton Sorter by the Cambridge Instrument Company
Description
Item of sales literature bound within black hardback volume: ‘CAMBRIDGE INSTRUMENT CO. CATALOGUES 76-136’
Shelfmark
Maker
Griffin and Tatlock Ltd.
Title
Some inexpensive laboratory utilities [facsimile]
Description
This is a simple presentation of a selection of devices made by Griffin & Tatlock, together with their model numbers and one or two sentences of description for each.
The instruments featured are:
Spring clamps;
Beaker rack;
New rack for tubing and rod;
Fisher patent burner;
Support for use with the Fisher burner
Shelfmark
Maker
Cambridge Instrument Company
Title
Cambridge Aero-Mixture Indicator by the Cambridge Instrument Company
Description
Item of sales literature bound within black hardback volume: ‘CAMBRIDGE INSTRUMENT CO. CATALOGUES 76-136’
Shelfmark
Maker
Wireless World
Title
Radio data charts: A series of forty-three abacs providing most of the essential data required in receiver design
Description
This book has a vertical format, the spine at the top, and pages turning like a flip-chart; printing on the outside covers follows this pattern. The contents consist of 43 charts arranged by number as follows: 1. Frequency and wavelength; 2-6: Inductance: Capacity, and Frequency: Short Wave, Medium Wave, Long Wave, IF Range, Audio Range; 7-9: Self-inductance of: Single-layer Solenoids 0.2-20 Microhenrys, Single-layer Solenoids 20-10,000 Microhenrys, Multi-layer Coils of Circular Section; 10-13: Diameter of Wire or Strand to Give Coil of Minimum RF Resistance; 14: Approximate RF Resistance of Coil when Wire Diameter is Optimum; 15: Ratio of RF Resistance to DC Resistance of a Coil; 16: Change of Inductance of Coil due to a Co-axial Cylindrical Screening Can; 17: Increase of RF Resistance of Coil due to a Co-axial Copper Screening Can; 18: Dynamic Resistance of a Parallel Tuned Circuit; 19: Universal Selectivity Chart; 20: Coupling Coefficient of IF Transformers; 21: Reactance of Coil or Condenser at Radio Frequencies; 22: Reactance of Coil or Condenser at Audio Frequencies; 23: Characteristic Impedance of Transmission Lines; 24: Attenuation of Two-wire and Co-axial Transmission Lines; 25: “Q” of a Quarter-wavelength Copper Resonant Line; 26: Resonant Impedance of a Quarter-wavelength Transmission Line; 27: Length of a Capacity-loaded Quarter-wavelength Transmission Line; 28-31: Mains Transformers: Turns per Volt, Wire Diameter and Winding area, Copper Loss, Iron Loss at 50 c/s; 32: Turns Ratio of Output Transformer; 33: Design of Chokes and Transformers Carrying AC Only at 50 c/s; 34: Design of Gapped Iron-cored Chokes and Transformers Carrying DC; 35: Design of Gapped Iron-cored Chokes: Determination of the Optimum Gap; 36: Comparative Efficiency of Gapped and Ungapped Chokes and Transformers Carrying DC; 37: Gain of Resistance-coupled Amplifiers; 38: Transmission and Phase Shift of RC Couplings; 39: Loudspeaker Dividing Network; 40: Decibels up and Down; 41: DC Resistance of Wire; 42: Universal Resistance Chart; 43: Attenuation Circuits of Constant Resistance; Copper Wire Tables.
Shelfmark
Maker
Watts; Ralph H.
Title
A Victorian firm of scientific instrument makers
Description
A typewritten, personal account of :- members of the Watts family who founded and shaped the firm of ER Watts, later to amalgamate with the firm of Adam Hilger; named members of staff, their characters, tasks and contributions; sources, uses and history of selected instruments, some with family connections
Maker
Hilger & Watts
Title
Watts equipment for optical tooling
Description
One of a binder of Wattsr instruments catalogues filed by topic, under the heading Alignment
Information is arranged under the following headings:- Watts Engineers’ Optical Level TA 201; Watts Levelling Rods for use with the Engineers’ Optical Level TA 201; Watts Levelling Staves TA 202, TA 203; Watts Transit Level TC 71, TC 70; Watts Stride Level TB 40, TB 41, including specifications
Shelfmark
Maker
Daily Telegraph Magazine
Title
Caring about one iota
Description
This article in the Daily Telegraph Magazine about the new scanning electron microscope, the Stereoscan, developed by Cambridge Scientific Instruments in conjunction with Cambridge University Engineering Laboratory, covers these aspects of the instrument:- History; Function; Technical Data; Applications
Shelfmark
Maker
Hoskins Company
Title
Hoskins Heat Gage or Electric Pyrometer
Description
Reproduces two scales at actual size and gives test results on Hoskins thermocouples (‘hot ends'). relating temperature to e.m.f. Also lists US patents
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