Overview Reviews Product Description Gauge registers 0 - 300 P.S.I. and 0 - 2100 kpa. Fits 14mm and 18mm thread sizes. Lisle Tools Catalog Product Videos Custom Field Harmonization code HTS #9026200090 Manufacturing country US Product Reviews Write a Review Write a Review × Lisle Gasoline Engine Compression Tester 20250 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Review Subject * Comments *