Force-table-RVFM-251-404-With-a-large-400mm-diameter-tabletop-30mm-thick-support-column-&-heavy-cast-base-with-levelling-screws-this-force-table-is-suitable-for-use-in-any-basic-physics-lab-The-durable-polymer-tabletop-carries-an-angle-scale-with-0-5-deg-divisions-numbered-every-10-deg-in-both-rotation-directions-Four-table-clamp-pulleys-are-included-each-has-a-circular-cut-out-with-a-fiducial-mark-for-accurate-angle-measurements-Four-sets-of-slotted-masses-each-150g-x-5g-includi