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Handbook for Playground Safety <br />APPENDIX B: PLAYGROUNDTESTING <br />B.1 Templates, Gauges, and Testing Tools <br />0.50 inch interior <br />diameter <br />t0.25 inch <br />thick <br />I. 1.0 ►I7 <br />inch exterior <br />diameter <br />1.5 inch interior <br />diameter <br />1 <br />2.0 — <br />inch exterior <br />diameter <br />1 <br />T <br />0.75 inch <br />y thick <br />3.0 inch interior <br />diameter <br />1 <br />Figure B1. Projection test gauges <br />3.5 — <br />inch exterior <br />diameter <br />1.5 inch thick <br />1.25 inch max <br />1/8 inch max. <br />2 inch max. <br />Note: gauge made of any rigid material <br />Figure B2. Projection test gauge for suspended swing assemblies and slides <br />42 <br />