Meteorological Meter wind speed Vetrometer Tretyakov and Box USSR 1942 Military

Description

Box size 31/21 centimeters, height 9 centimeters. Folded height 28 centimeters, width 36 centimeters, weight with box 1400 grams
The Tretyakov wind gauge is used to measure the direction and speed of the wind in the field. The need for such measurements is due to the fact that the direction and especially the speed of the wind in the fields can differ significantly from the data of the meteorological site. Tretyakov's wind gauge resembles a weather vane in its action.
Tretyakov's wind gauge consists of
1 - weather vane in the form of a wavy curved plate; 2 - counterweight; 3 - plate with bearing names on the lower part; 4 - spoon-shaped metal plate; 5 - counterweight attached to plate 4 at an angle of 76 °; 6 - cutout in the middle part of plates 4 and 5; 7 - pointer in the form of a point; 8 - uneven scale in m / s; 9 - horizontal axis; 10 - vertical rod
Payments:
PAYPAL:
I accept payments in the USA via Western Bid. Inc
Payment must be made within 5 days after the auction is closed
Shipping worldwide (via Internaional AIRMAIL with tracking number)
Shipping Time:
I ship your orders within 1-2 business days after the payment cleared.
In most times item will reach most of the countries within 15 to 25 working days. To some remote areas may take more than 25 working days.
Delivery time depends on destination and other factors, it may takes up to 20 working days. If you don't receive the item after 30 days,
please contact us, we'll investigate and solve the delivery problem. To some remote areas may take more than 45 days!
I * LL ALWAYS COMBINE SHIPPING WHEN POSSIBLE.
FEEDBACK:
Please do not forget to leave Feedback. The feedback will be left after reception
of a feedback from you. If you had a problem with got item, communicate
with me before to leave a negative feedback. I will try to solve a problem.
Your positive feedback is very important for me.