Receive Market Rule
EWrapper.marketRule (
marketRuleId: int. Market Rule ID requested.
priceIncrements: PriceIncrement[]. Returns the available price increments based on the market rule.
)
Returns minimum price increment structure for a particular market rule ID market rule IDs for an instrument on valid exchanges can be obtained from the [contractDetails](/tws-api/doc/contracts-financial-instruments/contract-details/request-contract-details) object for that contract

