Barton’s Horizontal Apparatus Searle’s Pattern

2 feet 3 holes & screws, separated by 2 support rods approx 600mm. Wheel 165mm dia. Over groove Moving on ball bearings is provided with a chuck to hold a rod of 55cm long & 5mm dia with 2 Al. graduated scales, mounted on a pillar, 2 pointers with clamp for attachment on brass & steel rods, cord, and hook for carrying masses. Supplied without weights.