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From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Laboratory report on the calibration of two A.R.I.C. distance thermometers.

Identifier  ExFiles\Box 78\1\  scan0232
Date  23th August 1927
  
Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}

X35765

H11/EA23.8.27.

Laboratory.
Report No.L930.

Re 2 A.R.I.C. Distance Thermometers sent in for calibration 22.8.27.

Thermometer Reading oC
30
40
50
60
70
80
90
100

Nickel Plated dial reading.
34.5 *
34.5 *
45
59.5
69
80
90
100

All black dial reading.
30
33.5
45
58.5
69
80
90
100

Upon reaching 100oC, the water, in which all three were immersed, was boiled for half an hour.
The whole was then allowed to cool down, no appreciable difference in the readings being noticed.
The thermometers are returned herewith.

* This stationary tendency was confirmed

Hl. HC
  
  


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