|Size||255 x 435mm|
|Location||Stored at the London Metropolitan Archives|
|Acquired||Auction at Bonhams
Grants from NHMF, Art Fund, V&A, Friends National Libraries & Trinity Buoy Wharf
Watercolour featuring a cylindrical tunnelling shield with crank (apparently for propelling cast-iron segments into place), cut from a larger sheet (conjoint with LDBRU:2017.19), with scale of feet, dated "September 1818".