Rotatrim 54 Medium-Duty Trimmer engineered for performance trouble-free maintenance and long-lasting service. Ideal for art studios drafting rooms darkrooms and workshops. Self-sharpening tungsten steel cutting wheel and flat counter blade. Cast metal cutting head and end supports and twin 3/4 diameter chromed steel guide bars completely resistant to cutting head swivel. Gray wipe-clean Melamine baseboard 7/8 thick x 12 wide. Printed grid inch and metric with 1/4 grid lines. Transparent clamp strip allows accurate placement and holds material firmly. Aluminum side rule calibrated in inch and metric with adjustable cursor for repeat cuts. Cuts in both directions an overload plate on models M24T through M54T can be removed for bi-directional cutting of thin materials. Floor stand and other accessories available.