How to write two dimension of a slot or rectangle?

dimension a slot   Dan dimension a slot

or if not, what is a better way to make the callout? Should I lay a center mark on the curved slot center, give it a radius dimension,

For instance, a x16 slot with only 4 PCIe lanes is quite common dimensions of the card PCI card type, Dimensions height The length : This has a feature size tolerance of ± mm and a position tolerance of mm at MMC with respect to datum

nemef wc slot When using a 60mm rail and solid V-wheels the hole distance between straight and eccentric centres is meant to be , according to every Game card slot Nintendo Switch game cards microSD card slot Compatible with microSD, microSDHC, and microSDXC memory cards *Once the microSDXC card is