- HOME
- WHAT’S NEW
- PRECISION MEASUREMENT
- LCR Bridge 6451-2 with Limits Comparator
- PRESSURE MEASUREMENT
- POWER PLANT
- RESISTANCE MEASUREMENT
- MO-5892-1A Portable Digital Micro-ohmmeter
- MO-5889-200A Portable Digital Micro-ohmmeter
- MO-589R-200A Portable Digital Micro-ohmmeter
- MO-5893-10A Portable Digital Micro-ohmmeter
- MO-5893-10AT Portable Digital Micro-ohmmeter
- MO-5898-100A Portable Digital Micro-ohmmeter
- MO-5898-200A Portable Digital Micro-ohmmeter
- MO-5899-100R Portable Digital Micro-ohmmeter
- Resistance Test Clamp
- Kelvin Test Lead Sets
- Model 5894 Wide Range Precision Ohmmeter
- Model 5896C Dual Channel Transformer Micro-Ohmmeter (RM)
- Model 5898 Portable 200A Precision Micro-Ohmmeter (RM)
- Standard Reference Resistors
- PORTABLE BRIDGES
- DECADE RESISTANCE BOXES
- TRANSFORMER TEST EQUIPMENT
- Portable Transformer Ratiometer Model 4167F
- Portable Transformer Ratiometer Model 4167F-(CVT)
- Portable ‘Q’ (Quality) meter type 5867
- Transformer Micro-Ohmmeter (10 Amp) 5895
- Dual Channel Transformer Micro-Ohmmeter 5896C
- High Current (100 Amp) Portable Micro-Ohmmeter 5897
- High Current (200A) Portable Micro-Ohmmeter 5898
- High Resistance Fault Locator 5762N
- PORTABLE TEST & MEASUREMENT
- SUBMARINE CABLE TEST
- Long-Haul Submarine Cable Test Set 5903N
- Portable Short-Haul Submarine Cable Test Set Model 5910
- Short Haul Submarine Cable Test Set Model 5910R (Rack Mount)
- Electroding Generator Model 5915
- Electroding Detector with GPS Model 5916G
- Beach Probe & Battery Powered Portable Electroding Detector Models 5917 and 5918
- Cable Termination Unit Type 5941
- Cable Termination Unit Type 5941-3 LAN
- P1000E Earth Probe
- DIGITAL EARTH TESTER
- OBSOLETE PRODUCTS
- HISTORY
- CONTACT

The company was founded by Henry Tinsley in 1904.
Business quickly grew and in 1907 the firm moved to Stanley House, Eldon Park Road, South Norwood where Tinsley entered into a partnership with another instrument maker named Snell - becoming for a short time Snell & Tinsley making telegraph apparatus, condensers, standard cells, potentiometers and 'bridges'. Snell however died after one year of the partnership leaving Henry Tinsley in sole ownership.
With the business now rapidly expanding Tinsley was looking for new premises and moved into Werndee Hall in 1916 where the firm would stay for almost 70 years. Werndee Hall consisted of a large house and stable; the building was on a three acre site which was ideally suited to handling the expansion of the business which had occurred due to the first world war when many new and varied instruments were required by the military.
DC Gall, Henry Tinsleys young cousin joined the firm in 1919 on his release from the Royal Navy Air Service. In charge of the test room manufacturing efficiency was soon improved and piled up orders from home and abroad were soon sorted out and systematically executed. Over the decades which followed a considerable number of instruments made by Tinsley would bear some mark of DC Gall's influence.

Stabaumatic Potentiometer
In the mid 1960's it was decided to build a separate Calibration Laboratory to undertake all the high precision measurements of the Tinsley instruments and carry out the assembly and adjustments in a temperature and humidity controlled environment.
