
It's about oneandonetenth times as heavy as a Deck of Cards.
In other words, the weight of a Deck of Cards is 0.91 times 28.6 monme (匁).
(ISO 216 B8 size, a.k.a. "poker size" 63 x 88 mm, 52card deck)
It's about fourfifths as heavy as a Battery (D).
In other words, 28.6 monme (匁) is 0.794 times the weight of a Battery (D), and the weight of a Battery (D) is 1.26 times that amount.
(Alkaline)
It's about threefourths as heavy as a Baseball.
In other words, 28.6 monme (匁) is 0.73817217933512 times the weight of a Baseball, and the weight of a Baseball is 1.3546974919872 times that amount.
(MLB rules)Per Major League Baseball rules, a baseball must weigh between 37.799364166667 monme (匁) and 39.689332375 monme (匁). A major league pitcher can throw a baseball at up to 150 kph (91 mph) (with a fastball pitch).
It's about twothirds as heavy as a Puck (Hockey).
In other words, 28.6 monme (匁) is 0.65793607288565 times the weight of a Puck (Hockey), and the weight of a Puck (Hockey) is 1.5199045032051 times that amount.
(Ice hockey)A standard ice hockey puck weighs between 41.579300583333 monme (匁) and 45.359237 monme (匁). Hockey pucks can be shot or passed at speeds of up to 160 kph (99 mph) during games.
It's about twothirds as heavy as a Billiard Ball.
In other words, 28.6 monme (匁) is 0.65793607288565 times the weight of a Billiard Ball, and the weight of a Billiard Ball is 1.5199045032051 times that amount.
(Americanstyle, WPA specifications)
It's about oneandseventenths times as heavy as a Battery (C).
In other words, the weight of a Battery (C) is 0.59 times 28.6 monme (匁).
(Alkaline)
It's about oneandninetenths times as heavy as a Tennis Ball.
In other words, 28.6 monme (匁) is 1.86 times the weight of a Tennis Ball, and the weight of a Tennis Ball is 0.538 times that amount.
(ITF Standard; for Type 2 ball)Per International Tennis Federation standard, regulation tennis balls must weigh about 15.4 monme (匁). Competition balls are also tested for bounce height, with the standards requiring that a ball dropped from 254 cm must bounce back to a height of 135 cm to 147 cm. 
