Part a- Length: 30.0cm x Width: 22.0cm x Height: 17.5cm
Part b- Length: 12.1cm x Width: 5.5cm x Height: 0.3cm
Part c- Length: 4.8cm x Width: 1.7cm x Height: 1.7cm
Part d-f- Length: 3.8cm x Width: 1.7cm x Height: 1.7cm
Part g- Length: 4.2cm x Width: 1.7cm x Height: 1.7cm
Part h- Length: 3.6cm x Diameter: 0.9cm
Part i- Length: 2.8cm x Diameter: 0.8cm
Part j- Length: 24.1cm x Width: 10.6cm
Part k-w- Length: 18.3cm x Width: 8.4cm
Part x- Length: 27.9cm x Width: 21.5cm
A metal instrument for obtaining a diagram of the pressure-volume or pressure-time changes in a steam engine or compression cylinder during the working cycle. The instrument is mounted in a wooden case with several loose pieces of the instrument in the bottom of the case. a- A rectangular wooden case with brass hinges and internal fittings, a metal handle and hook fastenings. A metal plaque on the front of the box reads, "Dobbie McInnes Ltd. 57 Bothwell St. Glasgow SO Sheilds Liverpool London" b- A metal wrench. c- A spring with stamped number "48''" and "120". d- A spring with stamped letter "C" and "06". e- A spring with stamped "135" and "60''" and "C". f- A spring with stamped "E", "80" and "180". g- A spring with stamped "225 M/M" and "1.7 kg". h-i- Cylindrical metal pieces. j- An orange envelop with printed words "LES CHANTIERS DAVIE SHIPBUILDING LIMITEE LIMITED CASE POSTALE/ P.O. BOX 130 LEVIS, QUE. G6V 6N7". k-w- Pieces of rectangular paper. x- Stapled four pieces of paper with the title of "CHAPTER XXI. PRESSURE INDICATORS AND INDICATOR DIAGRAMS.", page 680-687.
Dobbie McInnes Ltd, Glasgow
