| Sub-Type | Slide Rules |
|---|---|
| Type | Engineering/ Surveying |
| Country of Origin | United Kingdom |
Check the listing for details. Fisher Control Valve Sizing Rules Mk V & VI & Cases - Vintage. Condition: Used, Made in United Kingdom. Listed at 12.92 USD. The Fisher Control Valve Sizing Rules Mk V & VI & cases are vintage slide rules used in engineering and surveying. These tools were commonly used for calculating and sizing control valves in a variety of industrial applications. The rules provide a precise and efficient way to determine the correct size and configuration of control valves, making them a valuable collectable item for those interested in engineering and surveying history.
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