second hand tools
STEAM ENGINE INDICATOR

Seaton, Devon, England

STEAM ENGINE INDICATOR
THIS APPARATUS IS FOR GETTING 'INDICATOR DIAGRAMS' FOR A STEAM ENGINE (AND EARLY DIESEL ENGINES).
IT DRAWS A GRAPH OF MEASURED PRESSURE AGAINST THE STROKE OF THE PISTON.
ANALYSIS OF GRAPH GIVES THE EFFICIENCY OF THE ENGINE.
THE 4 BOXWOOD SCALES ARE 12, 100, 120 & 160 TIO THE INCH.


OFFERS for this rare complete example in original fitted wood box.



Back to Metalworking 1