I'm showing a grouping of Onoto mechanical pencils inspired by my friend Myk from here in this Facebook group. Onoto is a British company which has recently seen a rebirth. Very nice new production fountain pens are available today. Back to Myk, his Onoto pencil is second from the right in my picture. Thanks! The pictured Onoto's were produced from the 1930's into the early 1940's. Picture includes a nice German Steno pencil (circa  around 1935). It kinda snuck into the shot. The Steno is a nicely chased repeater (push activated). The Onoto's are all twist mechanisms. Onoto's were also produced in Australia. The far left pencil is so marked 'Made In Australia'.