Needle gauge and tension square rulers.

Lykke:
Needle gauge and tension square ruler; metric and imperial
Mango wood, made in India
For needles from 1.75mm (US00) to 12mm (US17)
Overall size: 18.5cm x 7cm

KnitPro Ruler (red)
Needle gauge and tension square ruler; includes a magnifying viewer; metric and imperial
Hard plastic
For needles from 2mm (US0) to 12mm (US17)
Overall size: 16.5cm x 5.75cm

KnitPro Round Viewer (green)
Needle gauge; metric and imperial
Hard plastic
For needles from 2mm (US0) to 12mm (US17)
Diameter: 6cm

KnitPro Mindful Collection:
Needle gauge; metric and imperial
Sterling silver plated in premium satin finish, in cotton drawstring bag
For needles from 1.5mm (US000) to 8mm (US11)
Diameter: 8cm

Milward sheep:
Needle gauge and tension square ruler; metric only
Plywood, sheep-shaped
For needles from 2mm to 10mm
Diameter: 10cm