Four individual gauges measuring pitch and thread in US and metric sizes.

• Made from aluminium.
• Identifies bolts | pipe threads and spark plugs 10-18mm.
• US or metric sizes.
• Range 5/16" to 3/4", 10tpi to 44tpi, metric thread sizes 2.5 to 22mm and pitch of 0.45mm to 2.5mm.
• Fast accurate.

Pipe and spark plug thread:

Thread: 1.00 mm, 20tpi, 1.50 mm, 14 tpi, 18 tpi, 27 tpi

Diameter: 1/16, ½, 18mm, 12mm, ¼, 14mm, 1/8, 10mm, 3/8

Small USS Thread gauge

Thread: 16 tpi, 18, tpi, 20 tpi, 24tpi, 28 tpi, 32 tpi, 36 tpi, 40 tpi, 44 tpi,

Diameter: 3/8; 5/16; ¼; #5; #6, #8; #10; #12

Large USS Thread gauge

Thread:10 tpi, 11, tpi, 12 tpi, 13tpi, 14 tpi, 16 tpi, 18 tpi, 20 tpi, 24 tpi, 28 tpi

Diameter: ¾, 5/8; 9/16; ½; 7/16; 3/8; 5/16; ¼

Metric Thread Gauge:

Thread: 2.50mm; 2.00 mm; 1.75 mm; 1.50 mm; 1.25 mm; 1.00mm; 0.8mm; 0.70mm; 0.50 mm; 0.45mm;

Diameter:4mm, 6mm, 8 mm, 12mm, 16mm, 20mm, 3mm, 5mm, 7mm, 10mm, 10mm, 14mm, 18mm, 22mm, 25mm