Vintage rc helicopter pitch meter

I think it is a very old pitch gauge for rc helicopter. It has been release by Izumi of Japan. Izumi released, at the end of '70, also a full line of rc cars in 1/12 and 1/8 cars (buggy and  formula).

Izumi 1/8 alpine a310 v6 dirt S-8 series

Here is a very rare Izumi Alpine kit in 1/8 scale. This kit was available, only in Japan, in the 1978. Izumi made another kit in 1/8 on same mechanic, the "Cheetach". Izumi did also some 1/12 kits always in the end of 70'.

The box is a bit damage due to age and it seems complete with all parts. The tyres are still in new conditions. the lexan body is in good conditions.