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W. F. STANLEY & CO. LTD. 
Quote Stanley’s ‘A’ Catalogue 
THE No. 4 “ALLBRIT” INTEGRATOR 
This model has two integrating units and is suitable for the determination of Area, 
Static Moment and Centre of Gravity of plane figures and the Volume of Solids of revolu 
tion : it is thus applicable to many of the requirements of Naval Architecture. 
One fixed tracer arm 16 in. or 40 cm. in length, is incorporated and a rail 54 in.(137 cm.) 
long is supplied as standard : longer rails can be supplied if required but must be specified 
when ordering the integrator. 
A856I No. 4 “ Allbrit ” Integrator (Inch Units) with accessories and complete with 
Instrument Case, Rail, Rail Case, and Instructions for Use. 
A8562 Ditto, (Metric Units) ditto, ditto, ditto. 
RANGE 
The approximate maximum size of figure (bisected by the axis of moments) which can 
be traced at one setting, using the standard 54 in. rail, is a rectangle :— 
30 in. (or 76 cm.) x 25 in. (or 62-5 cm.). 
The minimum table space required to permit this maximum range being used is :— 
62 in. (158 cm.) X 34 in. (87 cm.). 
this includes the space needed for the overhang of the counterpoise weight of the instru 
ment. 
A grooved and battened Drawing Board of suitable size can be supplied to order.