A pattern for a Fairisle sweater and cardigan in Wendy Merino DK.

Needles for Cardigan: 3.25mm (UK10, US4), 4mm (UK8, US6)
Needles for Sweater: 3.25mm (UK10, US4), 4.5mm (UK7, US7)
Stitch holders.

Number of 50g balls of Wendy Merino DK:

For cardigan:
Chest size 34 inches: 9 + 2 + 2 + 2+ 2
Chest size 36 inches: 9 + 2 + 2 + 3+ 2
Chest size 38 inches: 10 + 2 + 3 + 3+ 2
Chest size 40 inches: 10 + 3 + 3 + 3+ 2
Chest size 42 inches: 11 + 3 + 3 + 3+ 2
Chest size 44 inches: 12 + 3 + 3 + 4+ 2

For Sweater:
Chest size 34 inches: 8 +1
Chest size 36 inches: 9 + 1
Chest size 38 inches: 10 + 1
Chest size 40 inches: 10 + 1
Chest size 42 inches: 11 + 1
Chest size 44 inches: 12 + 1

Photographed using shades 2391 Putty, 2390 Cassis, 2389 Oasis, 2392 Sloe, 2380 Seaspray.