Sizing Guide

How to Measure your Bit Correctly

Loose Ring Cheeks | Fixed Cheeks | Weymouth | Mouthpiece Sizes | Cheek Sizes

There are various measurements to consider when sourcing and assessing the correct size of bit including length, thickness, ring size and design.


Loose Ring Cheeks

The picture below demonstrates a popular loose ring snaffle, the NS Team Up (9012). Other cheeks that are measured this way include the Universal, Beval and Balding Gag and the measurements to consider here are:


1) Mouthpiece Length: The measurement is taken by placing the bit on a flat surface and pulling the rings apart so the bit is at its maximum length. The measurement is taken along the full length of the mouthpiece from the inside edge of the loose ring to the inside edge of the opposite loose ring and can be measured in inches or centimetres.

2) Mouthpiece Thickness: This measurement is taken at the widest part near to the cheek just before the hole that the ring slides through. Again, if you put the bit on a flat surface, you can slide a tape measure below this poin


t and, if you look from above, you can see the thickness. The most accurate way to measure the thickness is using a set of calipers, which are widely available.

3) Loose Ring Diameter: This measurement is taken from the inner edge of the loose ring and is generally measured in millimeters; 70 mm being the average for a standard loose ring; and 55 mm the typical bridoon size.


Fixed Cheeks

Fixed cheeks include the Baucher, Full Cheek, Eggbutt, Pelham, NS Jumper, Cheltenham and Nelson. The picture above, showing the NS Tranz Full Cheek is a good example of the points to measure at for this type of bit.

As you can see, the only difference is that the mouthpiece thickness is measured directly adjacent to the cheek.




When sourcing a weymouth, there are a couple of additional measurements to consider as demonstrated in the picture below:


1) Shank Length (lower): This measurement is taken from below the mouthpiece to the bottom of the shank (not to the bottom of the loose ring) and is generally done in centimetres; 5cm, 7cm and 9cm are the options that are available within the Neue Schule Collection.

2) Shank Length (upper): In the Neue Schule Collection this measurement has been scaled according to the lower shank length of the Weymouth.


Mouthpiece Sizes

Neue Schule mouthpieces are available in a range of sizes between 4″ (101 mm) and 6 1/2″€ (165 mm). The table below shows the imperial/metric conversions.


Mouthpiece thickness varies according to the following table:



Cheek Sizes

Cheek measurements vary dependant on cheek style and requirement, the table below shows the various options.



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