USSR KL-1 Circular Log Slide Rule w/Transparent Shockproof Box Manual Vintage For Sale

Vintage Soviet Circular Slide Rule KL-1 Logarithmic CalculatorPerfect working condition. English manual and durable storage box included!📦 Key Features & Benefits

• Durable Protection: Comes in a convenient, transparent box made of high-impact, shatterproof polyethylene plastic. The lid is securely attached so it won\'t get lost.
• Complete Set: Includes the original-style KL-1 circular slide rule and an English user manual.
• Great Gift Idea: A unique and practical collectible for engineers, math enthusiasts, and vintage tech collectors.

⚙️ Capabilities & Technical Details
The KL-1 circular slide rule performs all essential mathematical operations:

• Multiplication, division, and combined calculations
• Squaring and extracting square roots
• Finding trigonometric sine (S) and tangent (T) functions
• Calculating the area of a circle

Design & Scales:

• Front (Moving Dial): Features 2 scales (Internal main counting scale + External scale of squares). Rotates via the black-dot knob.
• Back (Fixed Dial): Features 3 scales (Outer counting scale, Middle \"S\" sine scale, Inner \"T\" tangent scale). Hands rotate via the red-dot knob.

✈️ Fast & Safe Shipping from Kyiv, Ukraine
Yes, times are challenging, but the country, city, and postal services are operating reliably and efficiently!

• Origin: Shipped directly from Kyiv, Ukraine (capital city, ensuring the fastest routing).
• Dispatch: Ships within 1-5 business days after payment.
• Tracking: Registered Airmail with a fully trackable international number.
• Safe Packaging: Guaranteed secure and protective packaging so your item arrives safely.

Typical Delivery Times:

• USA & Europe: Usually 7–10 days (up to 14-21 days max if any transit delays occur).
• Japan, Australia & Worldwide: Usually 10–14 days.

⭐ Customer Satisfaction Guaranteed
Our most important goal is a 5-star reputation and your complete satisfaction. Please feel free to contact us with any questions before or after purchase. We greatly appreciate your response!Have a great day and happy offerding!