Abstract: A pipe saddle gauge is disclosed. The pipe saddle gauge provides a frame which adjusts in a telescoping manner to frictionally engage the base of a table type circular saw. The frame provides two pieces of square tubing, an inside tube telescopically carried within an outside tube. Each tube carries a bracket which engages the side of the table saw. An all thread rod carried within both tubes carries washers and threaded nuts at each end, thereby biasing the tubes together, causing the brackets to grip the sides of the table saw. A pivot post is supported by the frame in a vertical orientation. The pivot post provides a support tube, fixed to the frame, and a pivot tube carried within the support tube to rotate about an axis perpendicular to the horizontal. The support tube carries a gauge arm, which moves through a horizontal plane when the pivot tube pivots. The gauge arm carries an annular plate in an off-center manner.