Definition of tram. 1  1 : any of various vehicles: such asa : a carrier that travels on an overhead cable or railsb chiefly British : streetcarc : a boxlike wagon running on rails (as in a mine) 2  2 trams plural, chiefly British : a streetcar line.
The stamp is a hallmark and indicates it is made of 14 karat gold and the GCJ stands for 'George Carter Jessop'. Some of our pieces can have a Jessop's or GCJ stamp. Although there could be other makers who exist who also use GCJ.
GD & T Symbols, Terms and Definitions. Geometric Dimensioning & Tolerancing (GD & T) (sometimes refered to as GDT) Is a set of standard symbols which are used to define parts and assembly features and their tolerance zones in dimensioning engineering drawings. Also, it defines a part based on how it functions.