McNaught Indicator
- Made:
- 1819-1923
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LicenseThis image is released under a CC BY-NC-SA 4.0
Licence
Buy this image as a print
BuyLicense this image for commercial use at Science and Society Picture Library
LicenseThis image is released under a CC BY-NC-SA 4.0
Licence
Buy this image as a print
BuyLicense this image for commercial use at Science and Society Picture Library
License
Science Museum Group
© The Board of Trustees of the Science Museum
Science Museum Group
© The Board of Trustees of the Science Museum
Steam Engine Indicator of the McNaught type by G. Schole
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Steam Engine Indicator of the McNaught type used by G. Scholes
This is a modification of the McNaught indicator (see inv. 1897-60) made and used by Mr. G. Scholes for many years while in the employ of James Watt & Co. The improvements in detail due to Mr. Scholes consist in fitting two light steel rods working on short links which hold the pencil out of contact with the "card" until the desired moment; and in addition, a helical spring on the pencil holder to give a predetermined pressure.
Details
- Category:
- Motive Power
- Object Number:
- 1923-47
- Measurements:
-
overall (inc base): 407 x 152 x 102 mm
overall weight:
- type:
- steam indicators
- credit:
- Scholes, A.G.
