Your search for "fine track" revealed the following:

N Gauge Fine Manure 11 : SHIN Planning (Book) 9784916183477

Double-track truss bridge : Norihisa Matsumoto Painted 1:150 size

Worker Figurine D type 2 pieces : Suzume Model Unpainted Kit HO(1:80) SZM-HO-DW-D

Worker Figurine A type 2 pieces : Suzume Model Unpainted Kit HO(1:80) SZM-HO-DW-A

"Train runs, scenery turns!" : Yoshiaki Ishikawa, Diorama art work 1:150

Worker Figurine E type 2 pieces : Suzume Model Unpainted Kit HO(1:80) SZM-HO-DW-E

Worker Figurine C type 2 pieces : Suzume Model Unpainted Kit HO(1:80) SZM-HO-DW-C

Worker Figurine B type 2 pieces : Suzume Model Unpainted Kit HO(1:80) SZM-HO-DW-B

Brick Arch Bridge : Norihisa Matsumoto - painted 1:150 size

Rail Yard : Norihisa Matsumoto Painted 1:150 size

Stone Arch Bridge : Norihisa Matsumoto - painted 1:150 size

Torain: High-Legged Jib Crane and New Single Line Coal Tank (with Coal Yard) : Takumi Diorama Craft House - Finished product model HO(1:80) 1049

Straw Farmers and Local Railway : Yasuji Ibuchi Modeling work N (1:150)

Wooden Engin House : Norihisa Matsumoto, painted, 1:150 size

Trestle (Cantilever: Wooden Type) 2sets : ECHO Model Unpainted Kit HO(1:80) 171

Trestle (Wooden type) 1 set : ECHO Model Unpainted Kit HO (1:80) 173

Trestle Pole (Cantilever: Rail Type) 2sets : ECHO Model Unpainted Kit HO(1:80) 172

Autumn Valley Module : Kazutaku Itoh Pre-painted 1:150 Scale