Bahco 1537 Metric Imperial Screw Gauge

The Bahco 1537 Metric Imperial Screw Gauge has 52 blades: Metric 60 and Whitworth 55 screw pitch gauge.

Increments:

Metric: 0.25, 0.3, 0.35, 0.4, 0.5, 0.6, 0.7, 0.75, 0.8, 0.9, 1, 1.25, 1.5, 1.75, 2, 2.25, 3, 3.5, 4, 4.5, 5, 5.5 and 6mm

Whitworth: 4, 4.5, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 16, 18, 19, 20, 22, 24, 25, 26, 28, 30, 32, 36, 40, 48, 60 and 62mm