Your search for "n gauge fine manual" revealed the following:

Mercedes-Benz M-Class (4-wheel drive vehicle) with motorboat trailer: Bushings, complete N (1:160) 8334

Delivery Worker : Preiser - Finished product N (1:160) 79081

Seated traveller : Preiser - Painted N (1:160) 79189

Traveller 2 : Icom Pre-Painted Non-Scale MLL-2015

People and Cops Hanging Out in the Park : Woodland - Finished product version N(1:160) 2196

Tatazuma Man : Woodland Finished product N (1:160) 2156

Bill C : Sankei Kit N (1:150) MP03-90

Square nuts, bolts, washers with and without washers 0.7mm flat: Grantline unpainted kit O(1:48) 0008

Air Funnel 2.6-3.0 4pcs: Sakatsuo Detail Up 1:24 3210

Tennis Net-A : Icom Pre-Painted Assembly Kit 1:144-N(1:150) EP-60

Caregiver 2 - Slow Walk : Icom Finished product N (1:150) MLW-3030

Latrine Hut B : Baioudou N (1:150) pre-colored kit ST-030-15C

Powdered material: Birch leaves (dark green) : MBR material, non-scale 50-6001

Tractor and trailer: Preiser, complete painted N (1:160) 79504

The Delinquents : Woodland Finished product set N (1:160) 2136

Square nuts, bolts, washers, flat 0.7mm: Grantline unpainted kit HO(1:87) 5098

[Model] Planoita Paving Stone Kobaru Equivalent: Sakatsuu Kit N (1:150) 3767

Stone material R-stone Ballast N coarse (0.9-1.2 mm) Semi-trunk line Dark grey: Moline material N (1:150) 464

Travellers and Rescuers : Preiser - Painted N (1:160) 79216

Channel (U-shape) 1.2 x 2.4 x 558 mm, pack of 5 : Northeastern wood, non-scale 70542