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Allbrit fixed bar compensating polar planimeter with weighted arm

Allbrit fixed bar compensating polar planimeter with weighted arm

1954-1956
Allbrit fixed bar compensating polar planimeter with weighted arm

Allbrit fixed bar compensating polar planimeter with weighted arm

1955-1960
Ten test bars for use with polar planimeters

Ten test bars for use with polar planimeters

1955-1970
Allbrit sliding bar compensating polar planimeter with weighted arm

Allbrit sliding bar compensating polar planimeter with weighted arm

1969-1971
Box containing three identical weighted arms for Allbrit compensating polar planimeters by Stanley

Box containing three identical weighted arms for Allbrit compensating polar planimeters by Stanley

1955-1958
Daily Herald Contact Sheet: Middlepark School, Eltham, opening

Daily Herald Contact Sheet: Middlepark School, Eltham, opening

1937-11-23
Daily Herald Contact Sheet: Middlepark School, Eltham, opening

Daily Herald Contact Sheet: Middlepark School, Eltham, opening

1937-11-23
Daily Herald Contact Sheet: Middlepark School, Eltham, opening

Daily Herald Contact Sheet: Middlepark School, Eltham, opening

1937-11-23
Daily Herald Contact Sheet: Middlepark School, Eltham, opening

Daily Herald Contact Sheet: Middlepark School, Eltham, opening

1937-11-23
Daily Herald Contact Sheet: Middlepark School, Eltham, opening

Daily Herald Contact Sheet: Middlepark School, Eltham, opening

1937-11-23
Daily Herald Contact Sheet: Middlepark School, Eltham, opening

Daily Herald Contact Sheet: Middlepark School, Eltham, opening

1937-11-23
Base section of "Early Morning Waiter" automatic tea-making machine, comprising a wooden plinth on which is mounted a gas burner and stand, a solenoid and gas valve in a glass box, a counterbalanced arm and teapot stand, together with an electric bell mounted underneath the baseplate, invented and built by Ron Grumble, London, 1930

Base section of "Early Morning Waiter" automatic tea-making machine

1930
Wood-encased clock with brass time switch mounted in glass case above, part of the "Early Morning Waiter" automatic tea-making machine invented and built by Ron Grumble, London, 1930

Wood-encased clock with brass time switch mounted in glass case above

1930
Brass cylindrical water container with handle, filling cap and narrow tubular spout, acts as water boiler for the "Early Morning Water" automatic tea-making machine invented and built by Ron Grumble, London, 1930

Brass cylindrical water container with handle

1930