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How to Choose the Right Size Spartan Binocular Adapter

Written by: Spartan Team

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Time to read 7 min

Selecting the correct size for your Spartan Binocular Adapter is crucial for ensuring a secure fit for your binoculars. The Spartan Binocular Adapter is compatible with Spartan Hoplite, Sentinel, Ascent Tripods, and Davros Heads. Common brands and their relevant sizes are featured below. If your binoculars aren't listed, please refer to the instructions below.

Vortex

Razor UHD 8x42 - Size #2

Razor UHD 10x42 - Size #2

Razor UHD 10x50 - Size #2

Razor UHD 12x50 - Size #2

Razor UHD 18x56 - Size #2

Razor HD 8x42 - Size #1

Razor HD 10x42 - Size #1

Razor HD 10x50 - Size #1

Razor HD 12x50 - Size #1

Viper HD 8x42 - Size #2

Viper HD 10x42 - Size #2

Viper HD 10x50 - Size #2

Viper HD 12x50 - Size #2

Viper HD 10x50 (Japan Model) - Size #3

Viper HD 12x50 (Japan Model) - Size #3

Viper HD 15x50 (Japan Model) - Size #3

Kaibab 15x56 - Size #4

Kaibab 18x56 - Size #4

Kaibab 20x56 - Size #4

Diamondback (Non-HD) 8X42 - Size #2

Diamondback (Non-HD) 10X42 - Size #2

Diamondback (Non-HD) 10X50 - Size #3

Diamondback (Non-HD) 12X50 - Size #3

Diamondback HD 8x42 - Size #1

Diamondback HD 10x42 - Size #1

Diamondback HD 10x50 - Size #2

Diamondback HD 12x50 - Size #2

Diamondback HD 15x56 - Size #3

Crossfire (Non-HD) 8x42 - Size #1

Crossfire (Non-HD) 10x42 - Size #1

Crossfire HD 8x42 - Size #1

Crossfire HD 10x42 - Size #1

Crossfire HD 10x50 - Size #3

Crossfire HD 12x50 - Size #3

Fury HD - Size #3

Fury HD 5000 - Size #3

Fury HD 5000 AB - Size #3

Vulture 8.5X50 - Size #3

Vulture 10X50 - Size #3

Vulture 12X50 - Size #3

Swarovski

EL 10X42 - Size #2

EL 8.5X42 - Size #2

EL 10X50 - Size #3

EL 12X50 - Size #3

NL Pure 8x42 - Size #1

NL Pure 10x42 - Size #1

NL Pure 12x42 - Size #1

SLC 8x42 - Size #2

SLC 10x42 - Size #2

Leica

Geovid Pro 8X32 - Size #2

Geovid Pro 10X32 - Size #2

Geovid 8X42 BRF - Size #3

Geovid 10X42 BRF - Size #3

Geovid 8X42 HD - Size #3

Geovid 10X42 HD - Size #3

Geovid R 8x42 - Size #3

Geovid R 10x42 - Size #3

Geovid R 15x56 - Size #3

Geovid HD-B 8x42 - Size #3

Geovid HD-B 10x42 - Size #3

Geovid HD-R 8x42 - Size #3

Geovid HD-R 10x42 - Size #3

Geovid HD-B 2200 8x42 - Size #3

Geovid HD-B 2200 10x42 - Size #3

Geovid HD-B 3000 8x42 - Size #3

Geovid HD-B 3000 10x42 - Size #3

Geovid HD-R 2700 8x42 - Size #3

Geovid HD-R 2700 10x42 - Size #3

Geovid 3200.com 8x42 - Size #3

Geovid 3200.com 10x42 - Size #3

Trinovid 8X40 - Size #1

Trinovid 10X40 - Size #1

Trinovid HD 8X42 - Size #1

Trinovid HD 10X42 - Size #1

Noctivid 8X42 - Size #2

Noctivid 10X42 - Size #2

Ultravid 7X42 - Size #2

Ultravid 8X42 - Size #2

Ultravid 10X42 - Size #2

Ultravid 8X50 - Size #3

Ultravid 10X50 - Size #3

Ultravid 12X50 - Size #3

Zeiss

Victory SF 8x32 - Size #1

Victory SF 10x32 - Size #1

Victory SF 8X42 - Size #2

Victory SF 10X42 - Size #2

Victory RF 8X42 - Size #3

Victory RF 10X42 - Size #3

Victory HT 8X42 - Size #2

Victory HT 10X42 - Size #2

Conquest HD 8X32 - Size #1

Conquest HD 10X32 - Size #1

Conquest HD 8X42 - Size #2

Conquest HD 10X42 - Size #2

Terra ED 8X42 - Size #2

Terra ED 10X42 - Size #2

SFL 8X40 - Size #1

SFL 10X40 - Size #1

Classic 10X40 - Size #1

Leupold

Acadia 8X42 - Size #2

Acadia 10X42 - Size #2

Yellowstone 10X42 - Size #1

BX-1 McKenzie 8X42 - Size #2

BX-1 McKenzie 10X42 - Size #2

BX-1 McKenzie 10X50 - Size #3

BX-1 McKenzie 12x50 - Size #3

BX-2 Acadia 8x42 - Size #3

BX-2 Acadia 10x42 - Size #3

BX-2 Alpine HD 8X42 - Size #1

BX-2 Alpine HD 10X42 - Size #1

BX-2 Alpine HD 10X52 - Size #3

BX-2 Alpine HD 12X52 - Size #3

BX-T HD 10X42 MIL-L - Size #1

BX-4 Pro Guide HD 8x42 - Size #1

BX-4 Pro Guide HD 10x42 - Size #1

BX-4 Pro Guide HD 10x50 - Size #1

BX-4 Pro Guide HD 12x50 - Size #1

BX-5 Santiam HD 8x42 - Size #1

BX-5 Santiam HD 10x42 - Size #1

BX-5 Santiam HD 10x50 - Size #2

BX-5 Santiam HD 12x50 - Size #2

Nikon

Prostaff 3S 8x42 - Size #2

Prostaff 3S 10x42 - Size #2

Prostaff 5 10x50 - Size #3

Prostaff 5 12x50 (P511) - Size #3

Prostaff 7(S) 8x42 - Size #2

Prostaff 7(S) 10x42 - Size #2

Prostaff P3 8X30 - Size #1

Prostaff P3 10X30 - Size #1

Prostaff P3 8X42 - Size #2

Prostaff P3 10X42 - Size #2

Prostaff P7 8X30 - Size #1

Prostaff P7 10X30 - Size #1

Prostaff P7 8X42 - Size #2

Prostaff P7 10X42 - Size #2

Monarch ATB 8x42 - Size #2

Monarch ATB 10x42 (M511) - Size #2

Monarch ATB 12x42 - Size #2

Monarch 3 8x42 - Size #2

Monarch 3 10x42 - Size #2

Monarch 5 8x42 - Size #2

Monarch 5 10x42 - Size #2

Monarch 5 12x42 - Size #2

Monarch M5 8x42 - Size #2

Monarch M5 10x42 - Size #2

Monarch M5 12x42 - Size #2

Monarch 7 8x42 - Size #2

Monarch 7 10x42 - Size #2

Monarch M7 8x30 - Size #1

Monarch M7 10x30 - Size #1

Monarch M7 8x42 - Size #2

Monarch M7 10x42 - Size #2

Monarch HG 8x42 - Size #2

Monarch HG 10x42 - Size #2

Laserforce 10X42 - Size #3

Aculon 10X42 - Size #2

Aculon 10-22X50 - Size #2

Maven

B.1 8x42 - Size #2

B.1 10x42 - Size #2

B1.2 8X42 - Size #2

B1.2 8X42 - Size #2

B.2 7x45 - Size #2

B.2 9x45 - Size #2

B.2 11x45 - Size #2

B.5 10X56 - Size #3

B.5 12X56 - Size #3

B.5 15X56 - Size #3

B.5 18X56 - Size #3

B.6 10X50 - Size #2

B.6 12X50 - Size #2

C.1 8x42 - Size #2

C.1 10x42 - Size #2

C.1 12x42 - Size #2

C.3 10x50 - Size #3

C.3 12x50 - Size #3

Meopta

Meostar B1 Plus 8X42 HD - Size #2

Meostar B1 Plus 10X42 HD - Size #2

Optika HD 8X42 - Size #1

Optika HD 10X42 - Size #1

Optika LR 10x42 HD - Size #2

MeoPro Air 8X42 HD - Size #2

MeoPro Air 10X42 HD - Size #2

Sig Sauer

Zulu5 HD 10x42 - Size #2

Zulu5 HD 12x42 - Size #2

Zulu7 HDX 8x42 - Size #2

Zulu7 HDX 10x42 - Size #2

Zulu9 HDX 9x45 - Size #3

Zulu9 HDX 11x45 - Size #3

Zulu9 HDX 15x56 - Size #3

Kilo 3000 10x42 - Size #3

Kilo 10KABS HD - Size #3

Vangaurd

Endeavor ED 8X42 - Size #2

Endeavor ED 10X42 - Size #2

Endeavor ED II 8X42 - Size #2

Endeavor ED II 10X42 - Size #2

Endeavor ED IV 8X42 - Size #2

Endeavor ED IV 10X42 - Size #2

Veo ED 8X42 - Size #2

Veo ED 10X42 - Size #2

Veo HD 8X42 - Size #2

Veo HD 10X42 - Size #2

Veo HD II 8X42 - Size #2

Veo HD II 10X42 - Size #2

Spirit XF 8X42 - Size #2

Spirit XF 10X42 - Size #2

Bushnell

Fusion X 10X42 - Size #3

Fusion 10X42 Rangefinder - Size #2

Legend 8X42 - Size #2

Legend 10X42 - Size #2

Legend 10X50 - Size #3

Legend 12X50 - Size #3

Prime 10X42 - Size #2

Tract

Toric UHD 8X42 - Size #2

Toric UHD 10X42 - Size #2

Toric UHD 10X50 - Size #3

Toric UHD 12.5X50 - Size #3

Athlon

Neos G2 HD 8X42 - Size #1

Neos G2 HD 10X42 - Size #1

Talos G2 HD 8X42 - Size #1

Talos G2 HD 10X42 - Size #1

Argos G2 8X42 - Size #1

Argos G2 10X42 - Size #1

Argos G2 10X50 - Size #1

Argos G2 12X50 - Size #1

Argos G2 UHD 8X42 - Size #1

Argos G2 UHD 10X42 - Size #1

Midas 8X42 - Size #2

Midas 10X42 - Size #2

Midas G2 UHD 8X42 - Size #1

Midas G2 UHD 10X42 - Size #1

Midas G2 UHD 10X50 - Size #3

Midas G2 UHD 12X50 - Size #3

Cronus UHD 10X50 (RF Model) - Size #3

Cronus G2 UHD 10X42 - Size #1

Steiner

Predator 8X42 - Size #2

Predator 10X42 - Size #2

Predator 10X42 LRF - Size #2

Wildlife XP 10X44 - Size #2

XC 8X42 - Size #2

XC 10X42 - Size #2

HX 8X42 - Size #3

HX 10X42 - Size #3

T 10X42 - Size #2

Safari Ultrasharp 10X42 - Size #2

BluHorizons 10X42 - Size #2

Kowa

Genesis Prominar 8.5X44 - Size #2

Genesis Prominar 10.5X44 - Size #2

BDII 8X42 - Size #2

BDII 10X42 - Size #2

SVII 8X32 - Size #1

SVII 10X32 - Size #1

Method 1: Using a String


Step 1: Gather Your Tools

You will need:

  • Binoculars

  • A short section of dental floss or small diameter string

  • A ruler or tape measure

  • A Sharpie (optional, but helpful)


Step 2: Measure the Circumference

Wrap the string tightly around the binoculars where you want the adapter to be mounted. Mark the string where it completes a full circle.


Step 3: Measure and Compare

Measure the length of the string with a ruler to find the circumference. Use the sizing chart below to find your adapter size:


Size

Smallest (inches)

Largest (inches)

2

6 3/16

6 13/16

3

6 11/16

7 5/16

4

7 3/16

8


Method 2: Using Calipers


Step 1: Measure the Diameter

Using calipers, take two measurements of the diameter at the chosen mounting location. Average these measurements if your binoculars are not perfectly round.


Step 2: Compare with the Chart Below

Match your diameter measurements with the chart below to determine the correct adapter size:


Size

Smallest (inches)

Largest (inches)

1

1.810

2.010

2

1.970

2.160

3

2.130

2.320


Choosing the right size ensures a secure and stable fit for your binoculars, enhancing your viewing experience in the field.

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