Shoe size characteristics of a system of shoe sizing to be known as Mondopoint" and ISO 3355:1975 "Shoe sizes - System of length grading (for use in the Mondopoint system)". ISO 9407:1991, "Shoe sizes—Mondopoint system of sizing and marking", is the current version of the standard. The Mondopoint system is based on average foot length and foot width for which the shoe is suitable, measured in millimetres. The length of the foot is measured as horizontal distance between the perpendiculars in contact with the end of the most prominent toe and the most prominent part of the heel. The width of the
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