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Standards and Sizes

The standard tripod screw size for cameras and accessories is commonly known as the 1/4"-20 thread. This means that the screw has a diameter of 1/4 inch and a pitch of 20 threads per inch.

Conversions

Length (Distance)

• Inches(in) x 25.4 = Millimeters x 0.0394 = Inches (in)
• Feet (ft) x 0.305 = Meters (m) x 3.281 = Feet
• Miles x 1.609 = Kilometers (km) x 0.621 = Miles

Base quantity	1	2	3	4	5	6	7	10	50	100
Km into Miles	0.621	1.242	1.863	2.484	3.105	3.726	4.968	6.210	31.05	62.10
Miles to Km	1.61	3.22	4.83	6.44	8.05	9.66	11.27	16.10	80.5	161.0
mm to Inches	0.394	0.788	1.182	1.576	1.97	2.364	2.758	3.94	19.7	39.4
Inches to mm	1.61	3.22	4.83	6.44	8.05	9.66	11.27	16.10	80.5	161.0
Feet to Meters	1.61	3.22	4.83	6.44	8.05	9.66	11.27	16.10	80.5	161.0
Meters to Feet	1.61	3.22	4.83	6.44	8.05	9.66	11.27	16.10	80.5	161.0
Yards to Meters	1.61	3.22	4.83	6.44	8.05	9.66	11.27	16.10	80.5	161.0
Meters to Yards	1.61	3.22	4.83	6.44	8.05	9.66	11.27	16.10	80.5	161.0

Volume (Capacity)

• Cubic Inches (CU in) x 16.387 = Cubic Centemeters (cc) x 0.061 = Cubic Inches (CU in)
• Imperial Pints (imp Pt) x 0.568 = Litres (l) x 1.76 = Imperial Pints (imp Pt)
• Imperial Quarts (Imp qt) x 1.137 = Litres (l) x 0.88 = Imperial Quarts (Imp qt)
• Imperial Quarts (Imp qt) x 1.201 = US Quarts (US qt) x 0.833 = Imperial Quarts (Imp qt)
• US Quarts (Imp qt) x 0.946 = Litres (l) x 1.057 = US Quarts (Imp qt)
• Imperial Gallons (Imp gal) x 4.546 = Litres (l) x .22 = Imperial Gallons (Imp gal)
• Imperial Gallons (Imp gal) x 1.201 = US Gallons (US Gal) x 0.833= Imperial Gallons (Imp gal)
• US Gallons (US Gal) x 3.785 = Litres (l) x 0.264 = US Gallons (US Gal)

Mass (weight)

• Ounces (oz) x 28.35 = Grams (g) x 0.035 = Ounces (oz)
• Pounds (lb) x 0.454 = Kilograms (kg) x 2.205 = Pounds (lb)