Allbrit fixed bar compensating polar planimeter with weighted arm
1955-1960
Allbrit fixed bar compensating polar planimeter with weighted arm
1954-1956
Allbrit sliding bar compensating polar planimeter with weighted arm
1969-1971
Daily Herald Contact Sheet: Middlepark School, Eltham, opening
1937-11-23
Ten test bars for use with polar planimeters
1955-1970
"Early Morning Waiter" automatic tea-making machine
1930
Course-to-Steer box
1950-1954
Daily Herald Contact Sheet: Middlepark School, Eltham, opening
1937-11-23
Daily Herald Contact Sheet: Middlepark School, Eltham, opening
1937-11-23
Daily Herald Contact Sheet: Middlepark School, Eltham, opening
1937-11-23
Daily Herald Contact Sheet: Middlepark School, Eltham, opening
1937-11-23
Box containing three identical weighted arms for Allbrit compensating polar planimeters by Stanley
1955-1958
Daily Herald Contact Sheet: Middlepark School, Eltham, opening
1937-11-23