| Time Period Manufactured | Pre-1930 |
|---|---|
| Maker | Robertson-Thompson |
Check the listing for details. Improved Robertson-Thompson Steam Engine Indicator w/ Box - Vintage. Listed at 225.00 USD. What you see is what you get as is I know nothing about this item The Improved Robertson-Thompson Steam Engine Indicator is a vintage scientific instrument dating back to the pre-1930 period. Made by the renowned maker Robertson-Thompson, this particular item comes with its original box, adding to its historical and collectible value. This indicator was likely used for measuring and monitoring steam engine performance during that time period, making it a unique and valuable piece for collectors interested in antique science equipment.
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