Focus length guage set

i made this gauge set with holder to work with my k40 and setup, will only work if you have the light object lens holder air assist upgrade for the k40, file may require some editing to work with your k40 and setup if you have the light object upgrade, cut with 2 pieces of 3mm acrylic one for the front plate with gauges and one solid for the backing, glued together with uv cured glue but super glue will work just fine