Addmaster Indian Currency "Addiator".
This "Addiator" type stylus calculator is designed principally for the addition and subtraction of the old currency that was used on the Indian sub-continent.
It has columns for Rupees,
Laks (100,000's of Rupees), Annas (16 Annas = 1 Rupee), and Pies (12 Pies = 1 Anna).
109 x 178 x 7 mm (4.3" x 7.0" x 0.3").
Country of manufacture not known.
During British rule, and the first decade of independence, India and Pakistan used this currency. Decimalisation of the currency
took place in India in 1957 and in Pakistan in 1961, rendering this type of calculator obsolete.