Tinsley Precision Instruments

Tinsley product list:

>> Resistance Thermometry
>> Resistance Measurement
>> Standard Resistors
>> Standards Equipment
>> Portable Bridges
>> Decade Resistance boxes
>> Air Cooled Shunts
>> Transformer Test Equipment
>> Coil Test Equipment
>> Strain Measuring Equipment
>> LCR DataBridges
>> Power Analysers

Pioneering  Work at Tinsley

> An early  model of a Stabaumatic Potentiometer first manufactured in 
1963.
> A miniature version of the Vernier Potentiometer designed  in the mid
1950's.
> The instrument below is a redesigned version of the  Vernier
Potentiometer and the last type of the famous  Tinsley potentiometers to
be produced.
> Kelvin Double Bridge with Standards first produced  in 1912.
The instrument on show was used in the factory  for 60 years.
> Schering Bridge first manufactured in the 1930's and  discontinued in
the 1980's.
> Henry Tinsley made the set of Balances to enable to  weigh the
chemicals to produce Weston Standard Cells  in 1905.

> Switch  type Wheatstone Bridge first manufactured in the 1930's. 
A model of this type was once on show in the Science Museum  with a
cut away top panel showing the Tinsley famous dual  contact Switches.
> Dr D V Drysdale Torsion Head Wattmeter.  Records show that
instruments of this type  were first in use in 1906, again records  have
shown that these Wattmeters were in  use with
Electricity Boards and manufacturers for calibrating Watt-hour  Meters
worldwide for over 70 years.
> Portable version of Mr D C Gall's AC Co-ordinate  Potentiometer.
> The Precision version of this type consisted  of twelve instruments.
Also on show is  a Dr D V Drysdale Torsion Head Dynamometer  for
standardising the AC Potentiometer.

> The earliest  model of Henry Tinsley's Vernier Potentiometer with Slide 
Wire manufactured in 1912 and used in the manufacture of  Weston
Standard Cells.
> All switch type Vernier Potentiometers  1920 version later models dual
contact  switches and top cover panel.
> Behind the Vernier Potentiometer is a  Precision Double Potentiometer.
These instruments  had  380 switch positions. A much  larger version of
this type was produced  and consisted of three potentiometers in  series.

> Smith  Bridge No. 3, designed by F E Smith of the N.P.L. in 1912. 
An early version was manufactured in the 1920's and was in  use at the
N.P.L. up to the 1960's.
> A very precision type of the Smith Bridge  was re-designed in the
1950's by three  eminent scientists at the N.P.L. and Tinsley 
manufactured these and supplied to national  Laboratories worldwide.
> On the left, a set of Balancers made by  Henry Tinsley to weigh the
exact amount  of chemicals used in the manufacture of  Weston Standard
Cells. The exact date is  not known, however Henry Tinsley first 
manufactured commercially Standard Cells  in 1905.

LCR Databridge Model 6471

The model 6471 is a realistically priced, automatic, microprocessor
controlled  LCR bridge with a basic accuracy of 0.1%. It offers four
measurement fre- quencies,  of which the highest is 100 kHz. This higher
frequency, the accu- racy of measurement  and the optional
IEEE-488/RS232 interface make this instrument ideally suitable for
almost any application.

Additional information: www.tinsley.co.uk/6471.htm

A Tinsley Precision Instruments honlapja:  www.tinsley.co.uk