993.1.1: Blood Cell Calculator, 1922-1960

Additional Images

993.1.1: Blood Cell Calculator.
Image No. 2646 ; Photographer: Helen Kingsley

Object Description

Marbel's blood-cell calculator, an adding machine for erythrocytes, leucocytes and blood platelets. Model VI-T No.11633.

Object Classification

Accession Number: 993.1.1
Collection: Diagnostic, Laboratory
Date: 1922-1960

Object Dimensions

  • Height: 8.2 cm
  • Width: 30 cm
  • Depth: 9.8 cm

Object Parts

Object Materials

  • enamel paint,
  • plastic,
  • plating,
  • rubber,
  • steel

Acquisition Detail

  • Manufacturer: Marbel Blood Calculator Co.
  • Patent Country: USPatent Number: 1418384Patent Date: 1922-06-06
  • History of Use: Used to determine the proportionate number of different cells in a blood specimen