Soldering Iron Pyrometer

Taylor Electrical Insts Ltd, Slough, England
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Using The Litesold Pyrometer

Thoroughly tin the bit to be tested. Place the probe at right angles to the bit face so that the tips of the two parallel wires are bridged by the tinned surface; adjust the position of the probe for the highest steady reading. Use only enough pressure to ensure contact, to avoid bending the wires.
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The calibration label shows this as Asset No: 001 but the division that owned it is unknown.

For soldering applications, tip temperature accuracy is an important factor in the performance of a soldering iron. Incorrect temperature readings or not knowing how accurate the readings are can lead to a number of issues.
Both soldering system overheating and lower than expected temperatures can contribute to problems while soldering. Overheating can cause trace lifting, circuit board damage, poor solder joints, and damage to the components. Lower than expected temperatures may lead to longer dwell times and poor heat transfer, resulting in decreased productivity and the possibility of poor quality solder connections.
Production lines would have a means of checking the temperature of soldering irons and this Pyrometer has a low thermal mass thermocouple thermometer suitable for measuring the temperature of fine-tipped soldering irons over the temperature range 100°C to 500°C.
This Pyrometer was acquired from Mervyn Lea's widow: Mervyn was a Quality Control Manager.
The given dimensions are for the pyrometer in its wooden case. The pyrometer alone is 43 x 56 x 51 mm & 50g.