Shoe size "Footwear - Sizing - Vocabulary and terminology"; currently in development are companion standards ISO/TS 19409 "Footwear - Sizing - Measurement of last dimensions" and ISO/TS 19410 "Footwear - Sizing - Inshoe measurement". The adult shoe sizes are calculated from typical last length, which is converted from foot length in mm by adding an allowance of two shoe sizes: where formula_13 is foot length in mm. Direct conversion between adult UK, European and Mondopoint shoe size systems is derived as follows: Exact foot lengths may contain repeating decimals because the formulas include division by 3; in practice, approximate interval steps of
ISO standards for trailer connectors the 7-pin or 5-pin connector, but these are rare today. Note that the heavy trucks that may have 12V systems are usually older (Vintage vehicles) or on non-European markets. The color coding is defined in ISO 4141-3, but the standard color codes are not always followed and may be different on your particular vehicle. Physical design of the standard ISO 11446 but also called Jaeger-connector from the company that developed it. The following supplementary information exists for the connector: Other variants of this connector exists but they are rare.<ref name="JAEGER 13P/24V similar to ISO 11446"></ref> One is used in 24V