I'll try to help. Bows can be made with only parallel laminations,with a combination of parallels and tapers or with only tapers. Wood laminates are often sold in 36 inch/ 91,44 cm lenght.
A common taper rate is .002, that means that the laminate is getting two thousands of an inch thinner for each running inch.
A 36 inch long laminate that is .100 inch / 2,54 mm thick in one end will be .028 inch/ 0,71 mm thick in the other end.
A common combination in a recurve limb is one parallel and one .002 taper plus the glass fiber