CHAS. LENTZ & SONS 
Ga$ Regulators 
2280. The Gassncf Rekhert Gas Regulator Modified by Comer 
and Lentz* — In this regulator the gas enters at A, passes 
down through the ground in T piece and out to the burner 
at C. When the mercury rises and closes opening D, the 
reserve flame is fed through the small adjustable opening and 
groove B (shown enlarged at and in cross-section at B^^). 
This is an excellent regulator, but the T piece is liable 
to be misplaced by the weight or movement of attached rub- 
ber tubing and is easily deranged by students, each $2 25 
2282. Munckes Gas Regulator Modified by Lentz — For low pres- 
sure only. The expanding air or ether vapor in bulb drives 
up the mercury in central tube and prevents the gas passing in 
tubes B and C. The reserve flame is then fed through the ad- 
justable stopcock A. Very sensitive. Inlet and outlet tubes 
rigid, each - ^ 
2284. Dunham's Gas Regulator —Very sensitive. Operated by the 
expansion of alcohol in bulb acting upon a mercury column. 
Reserve flame not adjustable. Filled complete 3 SO 
When shipped out of the city the regulator must be filled 
by consignee. 
2286. Lotha Mayer Gas Regulator for Sterilizing, etc.— Bulb con- 
tains air which pushes up the mercury column on expanding. 
■ Thermal point regulated as in the Dunham regulator, by rais- 
ing or lowering inflow tube in the rubber or cork stopper, each 2 OO 
Lautenschlaeger's Gas Regulator. Imported to order only. 
Scheibler's Electrical Regulator. Imported to order only. 
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