10-3/4 x 6-3/4 x 3-1/4"
27.3 x 17.1 x 8.2cm
Prototypes in service from 1930s to the present
* Must-have for major engine terminals & backshops
* Slotted base accepts popular rail sizes
* Molded in four colors & clear plastic
Office measures: 3-1/8 x 1-5/8 x 1-1/4" 7.9 x 4.1 x 3.1cm