Henry
Tinsley began making resistance boxes and galvanometers in 1904.
From its humble beginnings, in a garden shed, in Beckenham; H. Tinsley
& Company, now known as Tinsley Precision Instruments has remained
the foremost manufacturer of Precision Resistance based products
in the world.
Tinsley Calibration
continues the tradition of Accuracy & Precision with its UKAS
Accredited Calibration Laboratory 0057, one of the earliest Accredited
British Calibration Service (BCS) Laboratories, Accredited on 29th
November 1971,
Tinsley’s Accredited
Resistance Calibration Capabilities makes it one of the foremost
resistance calibration facilities outside of a National Standards
Facility.
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DC RESISTANCE
1 Ω, 10 Ω, 25 Ω and
100 Ω: ±
0.35 ppm
1 kΩ and 10 kΩ: ±
0.77 ppm and 0.65 ppm
10 µΩ to 1 Ω, Current Carrying: ±
6.5 nΩ to 62 ppm
1 Ω to 1 TΩ, Minimal
Power: ± 15
ppm to 0.72%
AC
RESISTANCE
2.5 Ω, 25 Ω, 50 Ω,
75 Ω, 100 Ω, 400 Ω and 1 kΩ at 75 Hz : ±
3 ppm
10 Ω to 1 kΩ, at 75 Hz: ±
4.7 ppm
500 µΩ to 10 Ω, shunts
40 Hz to 135 Hz: ±
280 ppm to 0.07%
For full Accreditation details see www.ukas.org
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Wilkins
Resistors 1Ω, to 10kΩ,
5 kV 9 Decade resistors to 1TΩ,

5 kV Single Decade Resistors to 1TΩ,
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