FTB-6 – Test Ball

$34.95

Model FTB-6 Universal Fabrication Test Ball:

Description

Model FTB-6 Universal Fabrication Test Ball: This universal plastic test ball can be used for quick visual inspections of the triangular tread and riser area of stair flights. The ball has an approximate tolerance of +/- 0.18750″. Use of this ball allows the fabricator to build and install the guard or railing and hold to under 6″ spacing requirements for the edge of tread and riser. (Colors Vary)