A Keuffel & Esser brass surveying ruler with folding line of sight measurement, a tabled steel plate for 66 feet of chain, a collection of folding rulers, engineers wooded and steel rulers including an example by G&M Simons London, spral levers etc. (34)

A 19th Century mahogany and brass banded three drawer telescope inscribed H.H.M Bartlett, 29th June 1886 ed M.

Lot 5
Sold for £35 hammer

Estimate £40-£60

A mahogany cased Maelzel metronome and a Carl Zeiss pair of binoculars in brown carrying case (2)

Lot 12
Sold for £45 hammer

Estimate £40-£60

An early 20th Century full plate photograph of a disastrous land slip at a Black Country open cast coal mine w

Lot 14
Estimate £40-£60