Bob Mockford Online         Calculating       << Back Decimeter Next >>     Home > Calculating > Decimeter   Calculating Introduction In The Hand Addiator Addmaster Arithma Decimeter Exactus Reckoner On The Desk Addipresto Bri Cal Brunsviga Contex A Contex B Olivetti 15 £sd Olivetti 20 £sd Olivetti Decimal Plus Victor For an explanation of £sd money see the Money page in the Bus Museum section     Decimeter Model     Maker     Origin     Date   c. 1970 Serial       A pocket calculator to convert between the old sterling money (£sd) and the new decimal currency (pounds and pence). The result is rounded to the nearest half new penny.   By turning the shillings and pence dials to the required amount, it gives the result in (rounded) new pence in tens and units. The example here shows 17 shillings and six pence as 85 + 2½ which is 87½ pence.   A lot of similar converters were around for a short time in 1971 when the UK changed currencies. They were useful for people who wanted to compare shop prices. The Decimal Currency Board also issued a printed "Shoppers' table".   It had been expected that there would be a long period where both sets of prices would be displayed, but in fact the changeover was quite quick.   Shopper's table     << Back Top of the Page Next >>     Home > Calculating