It's about one-and-one-tenth times as heavy as a Billiard Ball.
In other words, 170,097.138750 miligrams is 1.0434782608696 times the weight of a Billiard Ball, and the weight of a Billiard Ball is 0.95833333333330 times that amount.(American-style, WPA specifications)
Per the World Pool-Billiard Association, a billiard ball weight must weigh between 155,922.37718750 miligrams and 170,097.138750 miligrams. According to legend, the difficulty in obtaining elephant ivory for the manufacture of billiard balls in the 19th century inspired the search for a replacement material, which led to the development of the first industrial plastic.
It's about one-and-one-tenth times as heavy as a Puck (Hockey).
In other words, 170,097.138750 miligrams is 1.0434782608696 times the weight of a Puck (Hockey), and the weight of a Puck (Hockey) is 0.95833333333330 times that amount.(Ice hockey)
A standard ice hockey puck weighs between 155,922.37718750 miligrams and 170,097.138750 miligrams. Hockey pucks can be shot or passed at speeds of up to 160 kph (99 mph) during games.
It's about nine-tenths as heavy as a Hamster.
In other words, the weight of a Hamster is 1 times 170,097.138750 miligrams.(for Syrian hamster, a.k.a. golden hamster, a.k.a. Mesocricetus auratus; adult)
An adult Syrian hamster has a typical weight of about 200,000 miligrams. Known for transporting food in the pouches of their cheeks so that they can bury it later, some hamsters can store up to 30,000,000 miligrams of food in their borrows.
It's about one-and-one-fifth times as heavy as a Baseball.
In other words, 170,097.138750 miligrams is 1.17073170731710 times the weight of a Baseball, and the weight of a Baseball is 0.854166666666650 times that amount.(MLB rules)
Per Major League Baseball rules, a baseball must weigh between 141,747.6156250 miligrams and 148,834.996406250 miligrams. A major league pitcher can throw a baseball at up to 150 kph (91 mph) (with a fastball pitch), with record-setting pitches as fast as 171 kph (106 mph).
It's about one-and-one-fourth times as heavy as a Battery (D).
In other words, 170,097.138750 miligrams is 1.260 times the weight of a Battery (D), and the weight of a Battery (D) is 0.7940 times that amount.(Alkaline)
A "D" size battery weighs 135,000 miligrams. The D size battery is the oldest of the modern battery sizes, first invented by the National Carbon Company in 1898.
It's about one-and-four-fifths times as heavy as a Deck of Cards.
In other words, the weight of a Deck of Cards is 0.560 times 170,097.138750 miligrams.(ISO 216 B8 size, a.k.a. "poker size" 63 x 88 mm, 52-card deck)
A deck of 52 ISO 216 B8-size playing cards weighs 94,000 miligrams. Utilizing nearly 3,700 decks, the record-holding largest card tower was built in early 2010, stood over 3.5 m (11 ft), and weighed over 230,000,000 miligrams.
It's about half as heavy as a Human Heart.
In other words, 170,097.138750 miligrams is 0.550 times the weight of a Human Heart, and the weight of a Human Heart is 1.80 times that amount.(human; adult)
The average human heart weighs about 310,000 miligrams. Each minute, the heart pumps between 10 and 20 liters (3 to 5 gallons) of blood through its chambers.